Home / 913,000.20-1,369,500.30-853,513.80

Finding the Fourth Proportional to 913,000.20, 1,369,500.30 and 853,513.80

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Solution

The fourth proportional to 913,000.20, 1,369,500.30 and 853,513.80 is: 1,280,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,000.20 : 1,369,500.30 = 853,513.80 : x
  2. Step 2: Convert to fraction form
    913,000.20/1,369,500.30 = 853,513.80/x
  3. Step 3: Cross multiply
    913,000.20x = 1,369,500.30 × 853,513.80
  4. Step 4: Simplify right side
    913,000.20x = 1,168,887,405,154.14
  5. Step 5: Solve for x
    x = 1,168,887,405,154.14/913,000.20
  6. Step 6: Final answer
    x = 1,280,270.70

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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.