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Finding the Fourth Proportional to 704,817.38, 972,205.59 and 418,134.50

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Solution

The fourth proportional to 704,817.38, 972,205.59 and 418,134.50 is: 576,763.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,817.38 : 972,205.59 = 418,134.50 : x
  2. Step 2: Convert to fraction form
    704,817.38/972,205.59 = 418,134.50/x
  3. Step 3: Cross multiply
    704,817.38x = 972,205.59 × 418,134.50
  4. Step 4: Simplify right side
    704,817.38x = 406,512,698,271.86
  5. Step 5: Solve for x
    x = 406,512,698,271.86/704,817.38
  6. Step 6: Final answer
    x = 576,763.16

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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.