Home / 1,319,946.27-1,979,926.70-478,476.15

Finding the Fourth Proportional to 1,319,946.27, 1,979,926.70 and 478,476.15

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Solution

The fourth proportional to 1,319,946.27, 1,979,926.70 and 478,476.15 is: 717,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,946.27 : 1,979,926.70 = 478,476.15 : x
  2. Step 2: Convert to fraction form
    1,319,946.27/1,979,926.70 = 478,476.15/x
  3. Step 3: Cross multiply
    1,319,946.27x = 1,979,926.70 × 478,476.15
  4. Step 4: Simplify right side
    1,319,946.27x = 947,347,702,305.82
  5. Step 5: Solve for x
    x = 947,347,702,305.82/1,319,946.27
  6. Step 6: Final answer
    x = 717,716.87

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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.