Home / 738,418.55-1,109,939.90-487,312.68

Finding the Fourth Proportional to 738,418.55, 1,109,939.90 and 487,312.68

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Solution

The fourth proportional to 738,418.55, 1,109,939.90 and 487,312.68 is: 732,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,418.55 : 1,109,939.90 = 487,312.68 : x
  2. Step 2: Convert to fraction form
    738,418.55/1,109,939.90 = 487,312.68/x
  3. Step 3: Cross multiply
    738,418.55x = 1,109,939.90 × 487,312.68
  4. Step 4: Simplify right side
    738,418.55x = 540,887,787,307.93
  5. Step 5: Solve for x
    x = 540,887,787,307.93/738,418.55
  6. Step 6: Final answer
    x = 732,494.85

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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.