Home / 709,539.04-979,184.48-387,269.76

Finding the Fourth Proportional to 709,539.04, 979,184.48 and 387,269.76

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Solution

The fourth proportional to 709,539.04, 979,184.48 and 387,269.76 is: 534,443.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,539.04 : 979,184.48 = 387,269.76 : x
  2. Step 2: Convert to fraction form
    709,539.04/979,184.48 = 387,269.76/x
  3. Step 3: Cross multiply
    709,539.04x = 979,184.48 × 387,269.76
  4. Step 4: Simplify right side
    709,539.04x = 379,208,538,565.33
  5. Step 5: Solve for x
    x = 379,208,538,565.33/709,539.04
  6. Step 6: Final answer
    x = 534,443.51

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Double scale
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1.5x scale

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.