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Finding the Fourth Proportional to 615,985.90, 922,423.65 and 491,569.90

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Solution

The fourth proportional to 615,985.90, 922,423.65 and 491,569.90 is: 736,113.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,985.90 : 922,423.65 = 491,569.90 : x
  2. Step 2: Convert to fraction form
    615,985.90/922,423.65 = 491,569.90/x
  3. Step 3: Cross multiply
    615,985.90x = 922,423.65 × 491,569.90
  4. Step 4: Simplify right side
    615,985.90x = 453,435,701,388.14
  5. Step 5: Solve for x
    x = 453,435,701,388.14/615,985.90
  6. Step 6: Final answer
    x = 736,113.77

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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.