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Finding the Fourth Proportional to 1,353,561.62, 1,867,915.06 and 749,949.62

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Solution

The fourth proportional to 1,353,561.62, 1,867,915.06 and 749,949.62 is: 1,034,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,561.62 : 1,867,915.06 = 749,949.62 : x
  2. Step 2: Convert to fraction form
    1,353,561.62/1,867,915.06 = 749,949.62/x
  3. Step 3: Cross multiply
    1,353,561.62x = 1,867,915.06 × 749,949.62
  4. Step 4: Simplify right side
    1,353,561.62x = 1,400,842,189,439.28
  5. Step 5: Solve for x
    x = 1,400,842,189,439.28/1,353,561.62
  6. Step 6: Final answer
    x = 1,034,930.49

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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.