Home / 768,419.79-1,060,376.18-428,909.91

Finding the Fourth Proportional to 768,419.79, 1,060,376.18 and 428,909.91

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Solution

The fourth proportional to 768,419.79, 1,060,376.18 and 428,909.91 is: 591,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,419.79 : 1,060,376.18 = 428,909.91 : x
  2. Step 2: Convert to fraction form
    768,419.79/1,060,376.18 = 428,909.91/x
  3. Step 3: Cross multiply
    768,419.79x = 1,060,376.18 × 428,909.91
  4. Step 4: Simplify right side
    768,419.79x = 454,805,849,785.39
  5. Step 5: Solve for x
    x = 454,805,849,785.39/768,419.79
  6. Step 6: Final answer
    x = 591,871.60

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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.