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Finding the Fourth Proportional to 710,151.04, 979,986.24 and 387,856

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Solution

The fourth proportional to 710,151.04, 979,986.24 and 387,856 is: 535,229.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,151.04 : 979,986.24 = 387,856 : x
  2. Step 2: Convert to fraction form
    710,151.04/979,986.24 = 387,856/x
  3. Step 3: Cross multiply
    710,151.04x = 979,986.24 × 387,856
  4. Step 4: Simplify right side
    710,151.04x = 380,093,543,101.44
  5. Step 5: Solve for x
    x = 380,093,543,101.44/710,151.04
  6. Step 6: Final answer
    x = 535,229.16

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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.