Home / 709,456.53-979,070.64-387,187.35

Finding the Fourth Proportional to 709,456.53, 979,070.64 and 387,187.35

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Solution

The fourth proportional to 709,456.53, 979,070.64 and 387,187.35 is: 534,329.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,456.53 : 979,070.64 = 387,187.35 : x
  2. Step 2: Convert to fraction form
    709,456.53/979,070.64 = 387,187.35/x
  3. Step 3: Cross multiply
    709,456.53x = 979,070.64 × 387,187.35
  4. Step 4: Simplify right side
    709,456.53x = 379,083,766,564.40
  5. Step 5: Solve for x
    x = 379,083,766,564.40/709,456.53
  6. Step 6: Final answer
    x = 534,329.80

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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.