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Finding the Fourth Proportional to 674,188.40, 1,010,978.04 and 358,577.84

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Solution

The fourth proportional to 674,188.40, 1,010,978.04 and 358,577.84 is: 537,704.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,188.40 : 1,010,978.04 = 358,577.84 : x
  2. Step 2: Convert to fraction form
    674,188.40/1,010,978.04 = 358,577.84/x
  3. Step 3: Cross multiply
    674,188.40x = 1,010,978.04 × 358,577.84
  4. Step 4: Simplify right side
    674,188.40x = 362,514,321,870.63
  5. Step 5: Solve for x
    x = 362,514,321,870.63/674,188.40
  6. Step 6: Final answer
    x = 537,704.77

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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.