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Finding the Fourth Proportional to 478,298.88, 660,305.76 and 370,627.20

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Solution

The fourth proportional to 478,298.88, 660,305.76 and 370,627.20 is: 511,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,298.88 : 660,305.76 = 370,627.20 : x
  2. Step 2: Convert to fraction form
    478,298.88/660,305.76 = 370,627.20/x
  3. Step 3: Cross multiply
    478,298.88x = 660,305.76 × 370,627.20
  4. Step 4: Simplify right side
    478,298.88x = 244,727,274,972.67
  5. Step 5: Solve for x
    x = 244,727,274,972.67/478,298.88
  6. Step 6: Final answer
    x = 511,661.82

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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.