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Finding the Fourth Proportional to 499,277.80, 748,916.70 and 286,701.40

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Solution

The fourth proportional to 499,277.80, 748,916.70 and 286,701.40 is: 430,052.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,277.80 : 748,916.70 = 286,701.40 : x
  2. Step 2: Convert to fraction form
    499,277.80/748,916.70 = 286,701.40/x
  3. Step 3: Cross multiply
    499,277.80x = 748,916.70 × 286,701.40
  4. Step 4: Simplify right side
    499,277.80x = 214,715,466,373.38
  5. Step 5: Solve for x
    x = 214,715,466,373.38/499,277.80
  6. Step 6: Final answer
    x = 430,052.10

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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.