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Finding the Fourth Proportional to 761,700.89, 1,050,729.88 and 485,545.97

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Solution

The fourth proportional to 761,700.89, 1,050,729.88 and 485,545.97 is: 669,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,700.89 : 1,050,729.88 = 485,545.97 : x
  2. Step 2: Convert to fraction form
    761,700.89/1,050,729.88 = 485,545.97/x
  3. Step 3: Cross multiply
    761,700.89x = 1,050,729.88 × 485,545.97
  4. Step 4: Simplify right side
    761,700.89x = 510,177,658,792.58
  5. Step 5: Solve for x
    x = 510,177,658,792.58/761,700.89
  6. Step 6: Final answer
    x = 669,787.40

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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.