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Finding the Fourth Proportional to 646,853.80, 970,280.70 and 579,202.60

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Solution

The fourth proportional to 646,853.80, 970,280.70 and 579,202.60 is: 868,803.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,853.80 : 970,280.70 = 579,202.60 : x
  2. Step 2: Convert to fraction form
    646,853.80/970,280.70 = 579,202.60/x
  3. Step 3: Cross multiply
    646,853.80x = 970,280.70 × 579,202.60
  4. Step 4: Simplify right side
    646,853.80x = 561,989,104,169.82
  5. Step 5: Solve for x
    x = 561,989,104,169.82/646,853.80
  6. Step 6: Final answer
    x = 868,803.90

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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.