Home / 638,292.48-880,519.68-487,127.04

Finding the Fourth Proportional to 638,292.48, 880,519.68 and 487,127.04

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Solution

The fourth proportional to 638,292.48, 880,519.68 and 487,127.04 is: 671,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,292.48 : 880,519.68 = 487,127.04 : x
  2. Step 2: Convert to fraction form
    638,292.48/880,519.68 = 487,127.04/x
  3. Step 3: Cross multiply
    638,292.48x = 880,519.68 × 487,127.04
  4. Step 4: Simplify right side
    638,292.48x = 428,924,945,380.15
  5. Step 5: Solve for x
    x = 428,924,945,380.15/638,292.48
  6. Step 6: Final answer
    x = 671,988.09

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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.