Home / 761,230.50-1,050,498.18-421,720.62

Finding the Fourth Proportional to 761,230.50, 1,050,498.18 and 421,720.62

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Solution

The fourth proportional to 761,230.50, 1,050,498.18 and 421,720.62 is: 581,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,230.50 : 1,050,498.18 = 421,720.62 : x
  2. Step 2: Convert to fraction form
    761,230.50/1,050,498.18 = 421,720.62/x
  3. Step 3: Cross multiply
    761,230.50x = 1,050,498.18 × 421,720.62
  4. Step 4: Simplify right side
    761,230.50x = 443,016,743,778.47
  5. Step 5: Solve for x
    x = 443,016,743,778.47/761,230.50
  6. Step 6: Final answer
    x = 581,974.51

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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.