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Finding the Fourth Proportional to 666,227.13, 919,390.80 and 360,303.90

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Solution

The fourth proportional to 666,227.13, 919,390.80 and 360,303.90 is: 497,217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,227.13 : 919,390.80 = 360,303.90 : x
  2. Step 2: Convert to fraction form
    666,227.13/919,390.80 = 360,303.90/x
  3. Step 3: Cross multiply
    666,227.13x = 919,390.80 × 360,303.90
  4. Step 4: Simplify right side
    666,227.13x = 331,260,088,767.54
  5. Step 5: Solve for x
    x = 331,260,088,767.54/666,227.13
  6. Step 6: Final answer
    x = 497,217.95

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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.