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Finding the Fourth Proportional to 499,646.40, 749,463.12 and 120,563.94

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Solution

The fourth proportional to 499,646.40, 749,463.12 and 120,563.94 is: 180,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,646.40 : 749,463.12 = 120,563.94 : x
  2. Step 2: Convert to fraction form
    499,646.40/749,463.12 = 120,563.94/x
  3. Step 3: Cross multiply
    499,646.40x = 749,463.12 × 120,563.94
  4. Step 4: Simplify right side
    499,646.40x = 90,358,226,631.89
  5. Step 5: Solve for x
    x = 90,358,226,631.89/499,646.40
  6. Step 6: Final answer
    x = 180,844.35

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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.