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Finding the Fourth Proportional to 486,677.60, 729,699.60 and 436,911.20

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Solution

The fourth proportional to 486,677.60, 729,699.60 and 436,911.20 is: 655,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,677.60 : 729,699.60 = 436,911.20 : x
  2. Step 2: Convert to fraction form
    486,677.60/729,699.60 = 436,911.20/x
  3. Step 3: Cross multiply
    486,677.60x = 729,699.60 × 436,911.20
  4. Step 4: Simplify right side
    486,677.60x = 318,813,927,875.52
  5. Step 5: Solve for x
    x = 318,813,927,875.52/486,677.60
  6. Step 6: Final answer
    x = 655,082.40

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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.