Home / 690,691.58-1,036,148.08-291,391.16

Finding the Fourth Proportional to 690,691.58, 1,036,148.08 and 291,391.16

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Solution

The fourth proportional to 690,691.58, 1,036,148.08 and 291,391.16 is: 437,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,691.58 : 1,036,148.08 = 291,391.16 : x
  2. Step 2: Convert to fraction form
    690,691.58/1,036,148.08 = 291,391.16/x
  3. Step 3: Cross multiply
    690,691.58x = 1,036,148.08 × 291,391.16
  4. Step 4: Simplify right side
    690,691.58x = 301,924,392,824.87
  5. Step 5: Solve for x
    x = 301,924,392,824.87/690,691.58
  6. Step 6: Final answer
    x = 437,133.45

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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.