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Finding the Fourth Proportional to 542,368.90, 748,390.49 and 300,651.40

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Solution

The fourth proportional to 542,368.90, 748,390.49 and 300,651.40 is: 414,855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,368.90 : 748,390.49 = 300,651.40 : x
  2. Step 2: Convert to fraction form
    542,368.90/748,390.49 = 300,651.40/x
  3. Step 3: Cross multiply
    542,368.90x = 748,390.49 × 300,651.40
  4. Step 4: Simplify right side
    542,368.90x = 225,004,647,061.93
  5. Step 5: Solve for x
    x = 225,004,647,061.93/542,368.90
  6. Step 6: Final answer
    x = 414,855.36

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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.