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Finding the Fourth Proportional to 703,438.35, 970,745.79 and 381,148.35

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Solution

The fourth proportional to 703,438.35, 970,745.79 and 381,148.35 is: 525,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,438.35 : 970,745.79 = 381,148.35 : x
  2. Step 2: Convert to fraction form
    703,438.35/970,745.79 = 381,148.35/x
  3. Step 3: Cross multiply
    703,438.35x = 970,745.79 × 381,148.35
  4. Step 4: Simplify right side
    703,438.35x = 369,998,156,127.95
  5. Step 5: Solve for x
    x = 369,998,156,127.95/703,438.35
  6. Step 6: Final answer
    x = 525,985.19

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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.