Home / 761,423.40-1,142,135.10-628,453.80

Finding the Fourth Proportional to 761,423.40, 1,142,135.10 and 628,453.80

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Solution

The fourth proportional to 761,423.40, 1,142,135.10 and 628,453.80 is: 942,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,423.40 : 1,142,135.10 = 628,453.80 : x
  2. Step 2: Convert to fraction form
    761,423.40/1,142,135.10 = 628,453.80/x
  3. Step 3: Cross multiply
    761,423.40x = 1,142,135.10 × 628,453.80
  4. Step 4: Simplify right side
    761,423.40x = 717,779,143,708.38
  5. Step 5: Solve for x
    x = 717,779,143,708.38/761,423.40
  6. Step 6: Final answer
    x = 942,680.70

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Double scale
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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.