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Finding the Fourth Proportional to 646,502.40, 969,753.60 and 447,436.80

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Solution

The fourth proportional to 646,502.40, 969,753.60 and 447,436.80 is: 671,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,502.40 : 969,753.60 = 447,436.80 : x
  2. Step 2: Convert to fraction form
    646,502.40/969,753.60 = 447,436.80/x
  3. Step 3: Cross multiply
    646,502.40x = 969,753.60 × 447,436.80
  4. Step 4: Simplify right side
    646,502.40x = 433,903,447,572.48
  5. Step 5: Solve for x
    x = 433,903,447,572.48/646,502.40
  6. Step 6: Final answer
    x = 671,155.20

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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.