Home / 805,545.30-1,111,375.65-499,511.70

Finding the Fourth Proportional to 805,545.30, 1,111,375.65 and 499,511.70

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Solution

The fourth proportional to 805,545.30, 1,111,375.65 and 499,511.70 is: 689,154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,545.30 : 1,111,375.65 = 499,511.70 : x
  2. Step 2: Convert to fraction form
    805,545.30/1,111,375.65 = 499,511.70/x
  3. Step 3: Cross multiply
    805,545.30x = 1,111,375.65 × 499,511.70
  4. Step 4: Simplify right side
    805,545.30x = 555,145,140,270.11
  5. Step 5: Solve for x
    x = 555,145,140,270.11/805,545.30
  6. Step 6: Final answer
    x = 689,154.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.