Home / 738,213.64-1,018,734.82-398,681.96

Finding the Fourth Proportional to 738,213.64, 1,018,734.82 and 398,681.96

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Solution

The fourth proportional to 738,213.64, 1,018,734.82 and 398,681.96 is: 550,181.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,213.64 : 1,018,734.82 = 398,681.96 : x
  2. Step 2: Convert to fraction form
    738,213.64/1,018,734.82 = 398,681.96/x
  3. Step 3: Cross multiply
    738,213.64x = 1,018,734.82 × 398,681.96
  4. Step 4: Simplify right side
    738,213.64x = 406,151,194,757.85
  5. Step 5: Solve for x
    x = 406,151,194,757.85/738,213.64
  6. Step 6: Final answer
    x = 550,181.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.