Home / 646,620,957.60-969,931,436.40-319,253,301.60

Finding the Fourth Proportional to 646,620,957.60, 969,931,436.40 and 319,253,301.60

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Solution

The fourth proportional to 646,620,957.60, 969,931,436.40 and 319,253,301.60 is: 478,879,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,620,957.60 : 969,931,436.40 = 319,253,301.60 : x
  2. Step 2: Convert to fraction form
    646,620,957.60/969,931,436.40 = 319,253,301.60/x
  3. Step 3: Cross multiply
    646,620,957.60x = 969,931,436.40 × 319,253,301.60
  4. Step 4: Simplify right side
    646,620,957.60x = 309,653,813,396,330,432
  5. Step 5: Solve for x
    x = 309,653,813,396,330,432/646,620,957.60
  6. Step 6: Final answer
    x = 478,879,952.40

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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.