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Finding the Fourth Proportional to 710,068.09, 979,888.98 and 387,778.27

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Solution

The fourth proportional to 710,068.09, 979,888.98 and 387,778.27 is: 535,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,068.09 : 979,888.98 = 387,778.27 : x
  2. Step 2: Convert to fraction form
    710,068.09/979,888.98 = 387,778.27/x
  3. Step 3: Cross multiply
    710,068.09x = 979,888.98 × 387,778.27
  4. Step 4: Simplify right side
    710,068.09x = 379,979,653,456.47
  5. Step 5: Solve for x
    x = 379,979,653,456.47/710,068.09
  6. Step 6: Final answer
    x = 535,131.29

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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.