Home / 821,445.60-1,231,246.80-348,050.40

Finding the Fourth Proportional to 821,445.60, 1,231,246.80 and 348,050.40

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Solution

The fourth proportional to 821,445.60, 1,231,246.80 and 348,050.40 is: 521,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,445.60 : 1,231,246.80 = 348,050.40 : x
  2. Step 2: Convert to fraction form
    821,445.60/1,231,246.80 = 348,050.40/x
  3. Step 3: Cross multiply
    821,445.60x = 1,231,246.80 × 348,050.40
  4. Step 4: Simplify right side
    821,445.60x = 428,535,941,238.72
  5. Step 5: Solve for x
    x = 428,535,941,238.72/821,445.60
  6. Step 6: Final answer
    x = 521,685.11

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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.