Home / 810,001.40-1,214,418.90-455,124.20

Finding the Fourth Proportional to 810,001.40, 1,214,418.90 and 455,124.20

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Solution

The fourth proportional to 810,001.40, 1,214,418.90 and 455,124.20 is: 682,358.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,001.40 : 1,214,418.90 = 455,124.20 : x
  2. Step 2: Convert to fraction form
    810,001.40/1,214,418.90 = 455,124.20/x
  3. Step 3: Cross multiply
    810,001.40x = 1,214,418.90 × 455,124.20
  4. Step 4: Simplify right side
    810,001.40x = 552,711,430,327.38
  5. Step 5: Solve for x
    x = 552,711,430,327.38/810,001.40
  6. Step 6: Final answer
    x = 682,358.61

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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.