Home / 778,815.60-1,168,223.40-478,321.80

Finding the Fourth Proportional to 778,815.60, 1,168,223.40 and 478,321.80

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Solution

The fourth proportional to 778,815.60, 1,168,223.40 and 478,321.80 is: 717,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,815.60 : 1,168,223.40 = 478,321.80 : x
  2. Step 2: Convert to fraction form
    778,815.60/1,168,223.40 = 478,321.80/x
  3. Step 3: Cross multiply
    778,815.60x = 1,168,223.40 × 478,321.80
  4. Step 4: Simplify right side
    778,815.60x = 558,786,719,490.12
  5. Step 5: Solve for x
    x = 558,786,719,490.12/778,815.60
  6. Step 6: Final answer
    x = 717,482.70

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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.