Home / 738,845.70-1,108,268.55-423,042.90

Finding the Fourth Proportional to 738,845.70, 1,108,268.55 and 423,042.90

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Solution

The fourth proportional to 738,845.70, 1,108,268.55 and 423,042.90 is: 634,564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,845.70 : 1,108,268.55 = 423,042.90 : x
  2. Step 2: Convert to fraction form
    738,845.70/1,108,268.55 = 423,042.90/x
  3. Step 3: Cross multiply
    738,845.70x = 1,108,268.55 × 423,042.90
  4. Step 4: Simplify right side
    738,845.70x = 468,845,141,370.80
  5. Step 5: Solve for x
    x = 468,845,141,370.80/738,845.70
  6. Step 6: Final answer
    x = 634,564.35

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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.