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Finding the Fourth Proportional to 423,028.80, 634,543.20 and 404,366.40

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Solution

The fourth proportional to 423,028.80, 634,543.20 and 404,366.40 is: 606,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,028.80 : 634,543.20 = 404,366.40 : x
  2. Step 2: Convert to fraction form
    423,028.80/634,543.20 = 404,366.40/x
  3. Step 3: Cross multiply
    423,028.80x = 634,543.20 × 404,366.40
  4. Step 4: Simplify right side
    423,028.80x = 256,587,949,428.48
  5. Step 5: Solve for x
    x = 256,587,949,428.48/423,028.80
  6. Step 6: Final answer
    x = 606,549.60

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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.