Home / 1,187,392.40-1,780,915.80-345,856.40

Finding the Fourth Proportional to 1,187,392.40, 1,780,915.80 and 345,856.40

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Solution

The fourth proportional to 1,187,392.40, 1,780,915.80 and 345,856.40 is: 518,734.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,392.40 : 1,780,915.80 = 345,856.40 : x
  2. Step 2: Convert to fraction form
    1,187,392.40/1,780,915.80 = 345,856.40/x
  3. Step 3: Cross multiply
    1,187,392.40x = 1,780,915.80 × 345,856.40
  4. Step 4: Simplify right side
    1,187,392.40x = 615,941,127,291.12
  5. Step 5: Solve for x
    x = 615,941,127,291.12/1,187,392.40
  6. Step 6: Final answer
    x = 518,734.27

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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.