Home / 738,741.60-1,107,456.30-438,903.90

Finding the Fourth Proportional to 738,741.60, 1,107,456.30 and 438,903.90

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Solution

The fourth proportional to 738,741.60, 1,107,456.30 and 438,903.90 is: 657,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,741.60 : 1,107,456.30 = 438,903.90 : x
  2. Step 2: Convert to fraction form
    738,741.60/1,107,456.30 = 438,903.90/x
  3. Step 3: Cross multiply
    738,741.60x = 1,107,456.30 × 438,903.90
  4. Step 4: Simplify right side
    738,741.60x = 486,066,889,149.57
  5. Step 5: Solve for x
    x = 486,066,889,149.57/738,741.60
  6. Step 6: Final answer
    x = 657,966.05

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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.