Home / 391,500.18-539,756.19-282,513.06

Finding the Fourth Proportional to 391,500.18, 539,756.19 and 282,513.06

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Solution

The fourth proportional to 391,500.18, 539,756.19 and 282,513.06 is: 389,497.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,500.18 : 539,756.19 = 282,513.06 : x
  2. Step 2: Convert to fraction form
    391,500.18/539,756.19 = 282,513.06/x
  3. Step 3: Cross multiply
    391,500.18x = 539,756.19 × 282,513.06
  4. Step 4: Simplify right side
    391,500.18x = 152,488,172,890.84
  5. Step 5: Solve for x
    x = 152,488,172,890.84/391,500.18
  6. Step 6: Final answer
    x = 389,497.07

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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.