Home / 738,743.60-1,107,459.30-438,905.90

Finding the Fourth Proportional to 738,743.60, 1,107,459.30 and 438,905.90

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Solution

The fourth proportional to 738,743.60, 1,107,459.30 and 438,905.90 is: 657,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,743.60 : 1,107,459.30 = 438,905.90 : x
  2. Step 2: Convert to fraction form
    738,743.60/1,107,459.30 = 438,905.90/x
  3. Step 3: Cross multiply
    738,743.60x = 1,107,459.30 × 438,905.90
  4. Step 4: Simplify right side
    738,743.60x = 486,070,420,779.87
  5. Step 5: Solve for x
    x = 486,070,420,779.87/738,743.60
  6. Step 6: Final answer
    x = 657,969.04

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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.