Home / 1,587,990.57-2,191,440.35-862,838.30

Finding the Fourth Proportional to 1,587,990.57, 2,191,440.35 and 862,838.30

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Solution

The fourth proportional to 1,587,990.57, 2,191,440.35 and 862,838.30 is: 1,190,724.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,990.57 : 2,191,440.35 = 862,838.30 : x
  2. Step 2: Convert to fraction form
    1,587,990.57/2,191,440.35 = 862,838.30/x
  3. Step 3: Cross multiply
    1,587,990.57x = 2,191,440.35 × 862,838.30
  4. Step 4: Simplify right side
    1,587,990.57x = 1,890,858,657,345.30
  5. Step 5: Solve for x
    x = 1,890,858,657,345.30/1,587,990.57
  6. Step 6: Final answer
    x = 1,190,724.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.