Home / 690,830.82-1,036,385.96-291,472.47

Finding the Fourth Proportional to 690,830.82, 1,036,385.96 and 291,472.47

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Solution

The fourth proportional to 690,830.82, 1,036,385.96 and 291,472.47 is: 437,267.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,830.82 : 1,036,385.96 = 291,472.47 : x
  2. Step 2: Convert to fraction form
    690,830.82/1,036,385.96 = 291,472.47/x
  3. Step 3: Cross multiply
    690,830.82x = 1,036,385.96 × 291,472.47
  4. Step 4: Simplify right side
    690,830.82x = 302,077,974,177.16
  5. Step 5: Solve for x
    x = 302,077,974,177.16/690,830.82
  6. Step 6: Final answer
    x = 437,267.66

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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.