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Finding the Fourth Proportional to 585,046.80, 877,570.20 and 485,319.60

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Solution

The fourth proportional to 585,046.80, 877,570.20 and 485,319.60 is: 727,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,046.80 : 877,570.20 = 485,319.60 : x
  2. Step 2: Convert to fraction form
    585,046.80/877,570.20 = 485,319.60/x
  3. Step 3: Cross multiply
    585,046.80x = 877,570.20 × 485,319.60
  4. Step 4: Simplify right side
    585,046.80x = 425,902,018,435.92
  5. Step 5: Solve for x
    x = 425,902,018,435.92/585,046.80
  6. Step 6: Final answer
    x = 727,979.40

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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.