Home / 646,622,967.60-969,934,451.40-319,255,311.60

Finding the Fourth Proportional to 646,622,967.60, 969,934,451.40 and 319,255,311.60

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Solution

The fourth proportional to 646,622,967.60, 969,934,451.40 and 319,255,311.60 is: 478,882,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,622,967.60 : 969,934,451.40 = 319,255,311.60 : x
  2. Step 2: Convert to fraction form
    646,622,967.60/969,934,451.40 = 319,255,311.60/x
  3. Step 3: Cross multiply
    646,622,967.60x = 969,934,451.40 × 319,255,311.60
  4. Step 4: Simplify right side
    646,622,967.60x = 309,656,725,513,282,048
  5. Step 5: Solve for x
    x = 309,656,725,513,282,048/646,622,967.60
  6. Step 6: Final answer
    x = 478,882,967.40

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.