Home / 666,660.68-999,191.55-342,115.00

Finding the Fourth Proportional to 666,660.68, 999,191.55 and 342,115.00

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Solution

The fourth proportional to 666,660.68, 999,191.55 and 342,115.00 is: 512,762.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,660.68 : 999,191.55 = 342,115.00 : x
  2. Step 2: Convert to fraction form
    666,660.68/999,191.55 = 342,115.00/x
  3. Step 3: Cross multiply
    666,660.68x = 999,191.55 × 342,115.00
  4. Step 4: Simplify right side
    666,660.68x = 341,838,415,913.20
  5. Step 5: Solve for x
    x = 341,838,415,913.20/666,660.68
  6. Step 6: Final answer
    x = 512,762.23

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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.