Home / 1,587,990.76-2,191,437.02-862,840.49

Finding the Fourth Proportional to 1,587,990.76, 2,191,437.02 and 862,840.49

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Solution

The fourth proportional to 1,587,990.76, 2,191,437.02 and 862,840.49 is: 1,190,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,990.76 : 2,191,437.02 = 862,840.49 : x
  2. Step 2: Convert to fraction form
    1,587,990.76/2,191,437.02 = 862,840.49/x
  3. Step 3: Cross multiply
    1,587,990.76x = 2,191,437.02 × 862,840.49
  4. Step 4: Simplify right side
    1,587,990.76x = 1,890,860,583,340.86
  5. Step 5: Solve for x
    x = 1,890,860,583,340.86/1,587,990.76
  6. Step 6: Final answer
    x = 1,190,725.18

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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.