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Finding the Fourth Proportional to 710,001.96, 979,810.74 and 387,715.92

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Solution

The fourth proportional to 710,001.96, 979,810.74 and 387,715.92 is: 535,052.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,001.96 : 979,810.74 = 387,715.92 : x
  2. Step 2: Convert to fraction form
    710,001.96/979,810.74 = 387,715.92/x
  3. Step 3: Cross multiply
    710,001.96x = 979,810.74 × 387,715.92
  4. Step 4: Simplify right side
    710,001.96x = 379,888,222,484.98
  5. Step 5: Solve for x
    x = 379,888,222,484.98/710,001.96
  6. Step 6: Final answer
    x = 535,052.36

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1.5x scale

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.