Home / 1,389,041.80-2,080,285.90-858,200.20

Finding the Fourth Proportional to 1,389,041.80, 2,080,285.90 and 858,200.20

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Solution

The fourth proportional to 1,389,041.80, 2,080,285.90 and 858,200.20 is: 1,285,275.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,041.80 : 2,080,285.90 = 858,200.20 : x
  2. Step 2: Convert to fraction form
    1,389,041.80/2,080,285.90 = 858,200.20/x
  3. Step 3: Cross multiply
    1,389,041.80x = 2,080,285.90 × 858,200.20
  4. Step 4: Simplify right side
    1,389,041.80x = 1,785,301,775,437.18
  5. Step 5: Solve for x
    x = 1,785,301,775,437.18/1,389,041.80
  6. Step 6: Final answer
    x = 1,285,275.77

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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.