Home / 1,039,378.88-1,559,071.92-319,715.69

Finding the Fourth Proportional to 1,039,378.88, 1,559,071.92 and 319,715.69

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Solution

The fourth proportional to 1,039,378.88, 1,559,071.92 and 319,715.69 is: 479,574.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,378.88 : 1,559,071.92 = 319,715.69 : x
  2. Step 2: Convert to fraction form
    1,039,378.88/1,559,071.92 = 319,715.69/x
  3. Step 3: Cross multiply
    1,039,378.88x = 1,559,071.92 × 319,715.69
  4. Step 4: Simplify right side
    1,039,378.88x = 498,459,754,662.43
  5. Step 5: Solve for x
    x = 498,459,754,662.43/1,039,378.88
  6. Step 6: Final answer
    x = 479,574.64

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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.