Home / 1,039,378.87-1,559,071.92-319,715.70

Finding the Fourth Proportional to 1,039,378.87, 1,559,071.92 and 319,715.70

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Solution

The fourth proportional to 1,039,378.87, 1,559,071.92 and 319,715.70 is: 479,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,378.87 : 1,559,071.92 = 319,715.70 : x
  2. Step 2: Convert to fraction form
    1,039,378.87/1,559,071.92 = 319,715.70/x
  3. Step 3: Cross multiply
    1,039,378.87x = 1,559,071.92 × 319,715.70
  4. Step 4: Simplify right side
    1,039,378.87x = 498,459,766,755.11
  5. Step 5: Solve for x
    x = 498,459,766,755.11/1,039,378.87
  6. Step 6: Final answer
    x = 479,574.66

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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.