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Finding the Fourth Proportional to 709,594.79, 979,240.49 and 387,304.86

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Solution

The fourth proportional to 709,594.79, 979,240.49 and 387,304.86 is: 534,480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,594.79 : 979,240.49 = 387,304.86 : x
  2. Step 2: Convert to fraction form
    709,594.79/979,240.49 = 387,304.86/x
  3. Step 3: Cross multiply
    709,594.79x = 979,240.49 × 387,304.86
  4. Step 4: Simplify right side
    709,594.79x = 379,264,600,885.78
  5. Step 5: Solve for x
    x = 379,264,600,885.78/709,594.79
  6. Step 6: Final answer
    x = 534,480.53

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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.