Home / 718,237.16-991,178.27-391,550.39

Finding the Fourth Proportional to 718,237.16, 991,178.27 and 391,550.39

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Solution

The fourth proportional to 718,237.16, 991,178.27 and 391,550.39 is: 540,345.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,237.16 : 991,178.27 = 391,550.39 : x
  2. Step 2: Convert to fraction form
    718,237.16/991,178.27 = 391,550.39/x
  3. Step 3: Cross multiply
    718,237.16x = 991,178.27 × 391,550.39
  4. Step 4: Simplify right side
    718,237.16x = 388,096,236,449.62
  5. Step 5: Solve for x
    x = 388,096,236,449.62/718,237.16
  6. Step 6: Final answer
    x = 540,345.53

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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.