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Finding the Fourth Proportional to 585,013.80, 877,520.70 and 285,686.40

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Solution

The fourth proportional to 585,013.80, 877,520.70 and 285,686.40 is: 428,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,013.80 : 877,520.70 = 285,686.40 : x
  2. Step 2: Convert to fraction form
    585,013.80/877,520.70 = 285,686.40/x
  3. Step 3: Cross multiply
    585,013.80x = 877,520.70 × 285,686.40
  4. Step 4: Simplify right side
    585,013.80x = 250,695,729,708.48
  5. Step 5: Solve for x
    x = 250,695,729,708.48/585,013.80
  6. Step 6: Final answer
    x = 428,529.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.