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Finding the Fourth Proportional to 761,245.71, 1,050,630.95 and 438,892.71

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Solution

The fourth proportional to 761,245.71, 1,050,630.95 and 438,892.71 is: 605,736.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,245.71 : 1,050,630.95 = 438,892.71 : x
  2. Step 2: Convert to fraction form
    761,245.71/1,050,630.95 = 438,892.71/x
  3. Step 3: Cross multiply
    761,245.71x = 1,050,630.95 × 438,892.71
  4. Step 4: Simplify right side
    761,245.71x = 461,114,262,660.91
  5. Step 5: Solve for x
    x = 461,114,262,660.91/761,245.71
  6. Step 6: Final answer
    x = 605,736.44

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Double scale
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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.