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Finding the Fourth Proportional to 693,445.12, 1,039,584 and 338,275.84

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Solution

The fourth proportional to 693,445.12, 1,039,584 and 338,275.84 is: 507,129.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,445.12 : 1,039,584 = 338,275.84 : x
  2. Step 2: Convert to fraction form
    693,445.12/1,039,584 = 338,275.84/x
  3. Step 3: Cross multiply
    693,445.12x = 1,039,584 × 338,275.84
  4. Step 4: Simplify right side
    693,445.12x = 351,666,150,850.56
  5. Step 5: Solve for x
    x = 351,666,150,850.56/693,445.12
  6. Step 6: Final answer
    x = 507,129.03

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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.