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Finding the Fourth Proportional to 487,417.90, 730,142.70 and 276,809.80

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Solution

The fourth proportional to 487,417.90, 730,142.70 and 276,809.80 is: 414,655.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,417.90 : 730,142.70 = 276,809.80 : x
  2. Step 2: Convert to fraction form
    487,417.90/730,142.70 = 276,809.80/x
  3. Step 3: Cross multiply
    487,417.90x = 730,142.70 × 276,809.80
  4. Step 4: Simplify right side
    487,417.90x = 202,110,654,758.46
  5. Step 5: Solve for x
    x = 202,110,654,758.46/487,417.90
  6. Step 6: Final answer
    x = 414,655.79

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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.