Home / 738,849.70-1,108,274.55-423,046.90

Finding the Fourth Proportional to 738,849.70, 1,108,274.55 and 423,046.90

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Solution

The fourth proportional to 738,849.70, 1,108,274.55 and 423,046.90 is: 634,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,849.70 : 1,108,274.55 = 423,046.90 : x
  2. Step 2: Convert to fraction form
    738,849.70/1,108,274.55 = 423,046.90/x
  3. Step 3: Cross multiply
    738,849.70x = 1,108,274.55 × 423,046.90
  4. Step 4: Simplify right side
    738,849.70x = 468,852,112,726.40
  5. Step 5: Solve for x
    x = 468,852,112,726.40/738,849.70
  6. Step 6: Final answer
    x = 634,570.35

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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.