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Finding the Fourth Proportional to 987,957.69, 1,363,383 and 535,248.69

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Solution

The fourth proportional to 987,957.69, 1,363,383 and 535,248.69 is: 738,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,957.69 : 1,363,383 = 535,248.69 : x
  2. Step 2: Convert to fraction form
    987,957.69/1,363,383 = 535,248.69/x
  3. Step 3: Cross multiply
    987,957.69x = 1,363,383 × 535,248.69
  4. Step 4: Simplify right side
    987,957.69x = 729,748,964,718.27
  5. Step 5: Solve for x
    x = 729,748,964,718.27/987,957.69
  6. Step 6: Final answer
    x = 738,643.94

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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.