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Finding the Fourth Proportional to 753,065.87, 1,039,200 and 408,888.42

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Solution

The fourth proportional to 753,065.87, 1,039,200 and 408,888.42 is: 564,249.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,065.87 : 1,039,200 = 408,888.42 : x
  2. Step 2: Convert to fraction form
    753,065.87/1,039,200 = 408,888.42/x
  3. Step 3: Cross multiply
    753,065.87x = 1,039,200 × 408,888.42
  4. Step 4: Simplify right side
    753,065.87x = 424,916,846,064
  5. Step 5: Solve for x
    x = 424,916,846,064/753,065.87
  6. Step 6: Final answer
    x = 564,249.25

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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.