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Finding the Fourth Proportional to 674,340.78, 1,011,656.97 and 358,751.82

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Solution

The fourth proportional to 674,340.78, 1,011,656.97 and 358,751.82 is: 538,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,340.78 : 1,011,656.97 = 358,751.82 : x
  2. Step 2: Convert to fraction form
    674,340.78/1,011,656.97 = 358,751.82/x
  3. Step 3: Cross multiply
    674,340.78x = 1,011,656.97 × 358,751.82
  4. Step 4: Simplify right side
    674,340.78x = 362,933,779,203.19
  5. Step 5: Solve for x
    x = 362,933,779,203.19/674,340.78
  6. Step 6: Final answer
    x = 538,205.30

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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.