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Finding the Fourth Proportional to 611,180.79, 916,958.91 and 291,740.28

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Solution

The fourth proportional to 611,180.79, 916,958.91 and 291,740.28 is: 437,700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,180.79 : 916,958.91 = 291,740.28 : x
  2. Step 2: Convert to fraction form
    611,180.79/916,958.91 = 291,740.28/x
  3. Step 3: Cross multiply
    611,180.79x = 916,958.91 × 291,740.28
  4. Step 4: Simplify right side
    611,180.79x = 267,513,849,503.66
  5. Step 5: Solve for x
    x = 267,513,849,503.66/611,180.79
  6. Step 6: Final answer
    x = 437,700.03

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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.