Home / 805,981.80-1,207,935.90-490,103.40

Finding the Fourth Proportional to 805,981.80, 1,207,935.90 and 490,103.40

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Solution

The fourth proportional to 805,981.80, 1,207,935.90 and 490,103.40 is: 734,524.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,981.80 : 1,207,935.90 = 490,103.40 : x
  2. Step 2: Convert to fraction form
    805,981.80/1,207,935.90 = 490,103.40/x
  3. Step 3: Cross multiply
    805,981.80x = 1,207,935.90 × 490,103.40
  4. Step 4: Simplify right side
    805,981.80x = 592,013,491,572.06
  5. Step 5: Solve for x
    x = 592,013,491,572.06/805,981.80
  6. Step 6: Final answer
    x = 734,524.64

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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.