Home / 761,321.50-1,050,658.10-421,789.75

Finding the Fourth Proportional to 761,321.50, 1,050,658.10 and 421,789.75

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Solution

The fourth proportional to 761,321.50, 1,050,658.10 and 421,789.75 is: 582,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,321.50 : 1,050,658.10 = 421,789.75 : x
  2. Step 2: Convert to fraction form
    761,321.50/1,050,658.10 = 421,789.75/x
  3. Step 3: Cross multiply
    761,321.50x = 1,050,658.10 × 421,789.75
  4. Step 4: Simplify right side
    761,321.50x = 443,156,817,334.48
  5. Step 5: Solve for x
    x = 443,156,817,334.48/761,321.50
  6. Step 6: Final answer
    x = 582,088.93

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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.