Home / 709,557.95-979,176.09-387,270.36

Finding the Fourth Proportional to 709,557.95, 979,176.09 and 387,270.36

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Solution

The fourth proportional to 709,557.95, 979,176.09 and 387,270.36 is: 534,425.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,557.95 : 979,176.09 = 387,270.36 : x
  2. Step 2: Convert to fraction form
    709,557.95/979,176.09 = 387,270.36/x
  3. Step 3: Cross multiply
    709,557.95x = 979,176.09 × 387,270.36
  4. Step 4: Simplify right side
    709,557.95x = 379,205,876,877.69
  5. Step 5: Solve for x
    x = 379,205,876,877.69/709,557.95
  6. Step 6: Final answer
    x = 534,425.52

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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.