Home / 688,132.12-1,032,536.34-309,320.50

Finding the Fourth Proportional to 688,132.12, 1,032,536.34 and 309,320.50

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Solution

The fourth proportional to 688,132.12, 1,032,536.34 and 309,320.50 is: 464,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,132.12 : 1,032,536.34 = 309,320.50 : x
  2. Step 2: Convert to fraction form
    688,132.12/1,032,536.34 = 309,320.50/x
  3. Step 3: Cross multiply
    688,132.12x = 1,032,536.34 × 309,320.50
  4. Step 4: Simplify right side
    688,132.12x = 319,384,656,956.97
  5. Step 5: Solve for x
    x = 319,384,656,956.97/688,132.12
  6. Step 6: Final answer
    x = 464,132.76

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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.