Home / 1,098,807.20-1,648,210.80-921,660.20

Finding the Fourth Proportional to 1,098,807.20, 1,648,210.80 and 921,660.20

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Solution

The fourth proportional to 1,098,807.20, 1,648,210.80 and 921,660.20 is: 1,382,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,807.20 : 1,648,210.80 = 921,660.20 : x
  2. Step 2: Convert to fraction form
    1,098,807.20/1,648,210.80 = 921,660.20/x
  3. Step 3: Cross multiply
    1,098,807.20x = 1,648,210.80 × 921,660.20
  4. Step 4: Simplify right side
    1,098,807.20x = 1,519,090,295,570.16
  5. Step 5: Solve for x
    x = 1,519,090,295,570.16/1,098,807.20
  6. Step 6: Final answer
    x = 1,382,490.30

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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.