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Finding the Fourth Proportional to 579,671.69, 869,654.68 and 180,315.45

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Solution

The fourth proportional to 579,671.69, 869,654.68 and 180,315.45 is: 270,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,671.69 : 869,654.68 = 180,315.45 : x
  2. Step 2: Convert to fraction form
    579,671.69/869,654.68 = 180,315.45/x
  3. Step 3: Cross multiply
    579,671.69x = 869,654.68 × 180,315.45
  4. Step 4: Simplify right side
    579,671.69x = 156,812,174,518.02
  5. Step 5: Solve for x
    x = 156,812,174,518.02/579,671.69
  6. Step 6: Final answer
    x = 270,518.95

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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.