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Finding the Fourth Proportional to 587,632.80, 881,449.20 and 421,744.80

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Solution

The fourth proportional to 587,632.80, 881,449.20 and 421,744.80 is: 632,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,632.80 : 881,449.20 = 421,744.80 : x
  2. Step 2: Convert to fraction form
    587,632.80/881,449.20 = 421,744.80/x
  3. Step 3: Cross multiply
    587,632.80x = 881,449.20 × 421,744.80
  4. Step 4: Simplify right side
    587,632.80x = 371,746,616,564.16
  5. Step 5: Solve for x
    x = 371,746,616,564.16/587,632.80
  6. Step 6: Final answer
    x = 632,617.20

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Similar ratio
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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.