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Finding the Fourth Proportional to 674,339.40, 1,011,800.70 and 341,915.40

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Solution

The fourth proportional to 674,339.40, 1,011,800.70 and 341,915.40 is: 513,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,339.40 : 1,011,800.70 = 341,915.40 : x
  2. Step 2: Convert to fraction form
    674,339.40/1,011,800.70 = 341,915.40/x
  3. Step 3: Cross multiply
    674,339.40x = 1,011,800.70 × 341,915.40
  4. Step 4: Simplify right side
    674,339.40x = 345,950,241,060.78
  5. Step 5: Solve for x
    x = 345,950,241,060.78/674,339.40
  6. Step 6: Final answer
    x = 513,020.95

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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.