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Finding the Fourth Proportional to 703,859.95, 971,331.71 and 381,575.13

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Solution

The fourth proportional to 703,859.95, 971,331.71 and 381,575.13 is: 526,576.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,859.95 : 971,331.71 = 381,575.13 : x
  2. Step 2: Convert to fraction form
    703,859.95/971,331.71 = 381,575.13/x
  3. Step 3: Cross multiply
    703,859.95x = 971,331.71 × 381,575.13
  4. Step 4: Simplify right side
    703,859.95x = 370,636,023,516.37
  5. Step 5: Solve for x
    x = 370,636,023,516.37/703,859.95
  6. Step 6: Final answer
    x = 526,576.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.