Home / 7,128,439.40-10,692,659.10-3,290,254.40

Finding the Fourth Proportional to 7,128,439.40, 10,692,659.10 and 3,290,254.40

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Solution

The fourth proportional to 7,128,439.40, 10,692,659.10 and 3,290,254.40 is: 4,935,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,439.40 : 10,692,659.10 = 3,290,254.40 : x
  2. Step 2: Convert to fraction form
    7,128,439.40/10,692,659.10 = 3,290,254.40/x
  3. Step 3: Cross multiply
    7,128,439.40x = 10,692,659.10 × 3,290,254.40
  4. Step 4: Simplify right side
    7,128,439.40x = 35,181,568,651,475.04
  5. Step 5: Solve for x
    x = 35,181,568,651,475.04/7,128,439.40
  6. Step 6: Final answer
    x = 4,935,381.60

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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.