Home / 918,572.98-1,377,890.55-319,539.31

Finding the Fourth Proportional to 918,572.98, 1,377,890.55 and 319,539.31

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Solution

The fourth proportional to 918,572.98, 1,377,890.55 and 319,539.31 is: 479,319.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,572.98 : 1,377,890.55 = 319,539.31 : x
  2. Step 2: Convert to fraction form
    918,572.98/1,377,890.55 = 319,539.31/x
  3. Step 3: Cross multiply
    918,572.98x = 1,377,890.55 × 319,539.31
  4. Step 4: Simplify right side
    918,572.98x = 440,290,187,115.37
  5. Step 5: Solve for x
    x = 440,290,187,115.37/918,572.98
  6. Step 6: Final answer
    x = 479,319.77

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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.