Home / 912,605.80-1,367,943.38-343,740.76

Finding the Fourth Proportional to 912,605.80, 1,367,943.38 and 343,740.76

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Solution

The fourth proportional to 912,605.80, 1,367,943.38 and 343,740.76 is: 515,247.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,605.80 : 1,367,943.38 = 343,740.76 : x
  2. Step 2: Convert to fraction form
    912,605.80/1,367,943.38 = 343,740.76/x
  3. Step 3: Cross multiply
    912,605.80x = 1,367,943.38 × 343,740.76
  4. Step 4: Simplify right side
    912,605.80x = 470,217,897,078.17
  5. Step 5: Solve for x
    x = 470,217,897,078.17/912,605.80
  6. Step 6: Final answer
    x = 515,247.54

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1.5x scale

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.