Home / 738,357.17-1,018,932.90-398,825.42

Finding the Fourth Proportional to 738,357.17, 1,018,932.90 and 398,825.42

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Solution

The fourth proportional to 738,357.17, 1,018,932.90 and 398,825.42 is: 550,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,357.17 : 1,018,932.90 = 398,825.42 : x
  2. Step 2: Convert to fraction form
    738,357.17/1,018,932.90 = 398,825.42/x
  3. Step 3: Cross multiply
    738,357.17x = 1,018,932.90 × 398,825.42
  4. Step 4: Simplify right side
    738,357.17x = 406,376,341,794.32
  5. Step 5: Solve for x
    x = 406,376,341,794.32/738,357.17
  6. Step 6: Final answer
    x = 550,379.08

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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.