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Finding the Fourth Proportional to 615,700.80, 849,860.64 and 361,154.88

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Solution

The fourth proportional to 615,700.80, 849,860.64 and 361,154.88 is: 498,507.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,700.80 : 849,860.64 = 361,154.88 : x
  2. Step 2: Convert to fraction form
    615,700.80/849,860.64 = 361,154.88/x
  3. Step 3: Cross multiply
    615,700.80x = 849,860.64 × 361,154.88
  4. Step 4: Simplify right side
    615,700.80x = 306,931,317,455.92
  5. Step 5: Solve for x
    x = 306,931,317,455.92/615,700.80
  6. Step 6: Final answer
    x = 498,507.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.