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Finding the Fourth Proportional to 710,068.34, 979,889.33 and 387,778.52

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Solution

The fourth proportional to 710,068.34, 979,889.33 and 387,778.52 is: 535,131.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,068.34 : 979,889.33 = 387,778.52 : x
  2. Step 2: Convert to fraction form
    710,068.34/979,889.33 = 387,778.52/x
  3. Step 3: Cross multiply
    710,068.34x = 979,889.33 × 387,778.52
  4. Step 4: Simplify right side
    710,068.34x = 379,980,032,212.30
  5. Step 5: Solve for x
    x = 379,980,032,212.30/710,068.34
  6. Step 6: Final answer
    x = 535,131.64

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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.