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Finding the Fourth Proportional to 452,950.40, 679,423.16 and 115,990.40

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Solution

The fourth proportional to 452,950.40, 679,423.16 and 115,990.40 is: 173,984.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,950.40 : 679,423.16 = 115,990.40 : x
  2. Step 2: Convert to fraction form
    452,950.40/679,423.16 = 115,990.40/x
  3. Step 3: Cross multiply
    452,950.40x = 679,423.16 × 115,990.40
  4. Step 4: Simplify right side
    452,950.40x = 78,806,564,097.66
  5. Step 5: Solve for x
    x = 78,806,564,097.66/452,950.40
  6. Step 6: Final answer
    x = 173,984.98

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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.