Home / 820,471.60-1,230,124.20-314,837.20

Finding the Fourth Proportional to 820,471.60, 1,230,124.20 and 314,837.20

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Solution

The fourth proportional to 820,471.60, 1,230,124.20 and 314,837.20 is: 472,032.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,471.60 : 1,230,124.20 = 314,837.20 : x
  2. Step 2: Convert to fraction form
    820,471.60/1,230,124.20 = 314,837.20/x
  3. Step 3: Cross multiply
    820,471.60x = 1,230,124.20 × 314,837.20
  4. Step 4: Simplify right side
    820,471.60x = 387,288,858,780.24
  5. Step 5: Solve for x
    x = 387,288,858,780.24/820,471.60
  6. Step 6: Final answer
    x = 472,032.01

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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.