Home / 1,210,061.20-1,815,480.60-811,152.40

Finding the Fourth Proportional to 1,210,061.20, 1,815,480.60 and 811,152.40

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Solution

The fourth proportional to 1,210,061.20, 1,815,480.60 and 811,152.40 is: 1,216,989.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,061.20 : 1,815,480.60 = 811,152.40 : x
  2. Step 2: Convert to fraction form
    1,210,061.20/1,815,480.60 = 811,152.40/x
  3. Step 3: Cross multiply
    1,210,061.20x = 1,815,480.60 × 811,152.40
  4. Step 4: Simplify right side
    1,210,061.20x = 1,472,631,445,843.44
  5. Step 5: Solve for x
    x = 1,472,631,445,843.44/1,210,061.20
  6. Step 6: Final answer
    x = 1,216,989.23

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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.