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Finding the Fourth Proportional to 674,339.78, 1,011,655.47 and 358,750.82

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Solution

The fourth proportional to 674,339.78, 1,011,655.47 and 358,750.82 is: 538,203.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,339.78 : 1,011,655.47 = 358,750.82 : x
  2. Step 2: Convert to fraction form
    674,339.78/1,011,655.47 = 358,750.82/x
  3. Step 3: Cross multiply
    674,339.78x = 1,011,655.47 × 358,750.82
  4. Step 4: Simplify right side
    674,339.78x = 362,932,229,419.99
  5. Step 5: Solve for x
    x = 362,932,229,419.99/674,339.78
  6. Step 6: Final answer
    x = 538,203.80

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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.