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Finding the Fourth Proportional to 452,681.45, 679,127.34 and 132,820.40

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Solution

The fourth proportional to 452,681.45, 679,127.34 and 132,820.40 is: 199,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,681.45 : 679,127.34 = 132,820.40 : x
  2. Step 2: Convert to fraction form
    452,681.45/679,127.34 = 132,820.40/x
  3. Step 3: Cross multiply
    452,681.45x = 679,127.34 × 132,820.40
  4. Step 4: Simplify right side
    452,681.45x = 90,201,964,488.47
  5. Step 5: Solve for x
    x = 90,201,964,488.47/452,681.45
  6. Step 6: Final answer
    x = 199,261.45

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1.5x scale

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.