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Finding the Fourth Proportional to 542,666.75, 748,880.12 and 300,986.33

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Solution

The fourth proportional to 542,666.75, 748,880.12 and 300,986.33 is: 415,361.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,666.75 : 748,880.12 = 300,986.33 : x
  2. Step 2: Convert to fraction form
    542,666.75/748,880.12 = 300,986.33/x
  3. Step 3: Cross multiply
    542,666.75x = 748,880.12 × 300,986.33
  4. Step 4: Simplify right side
    542,666.75x = 225,402,677,423.83
  5. Step 5: Solve for x
    x = 225,402,677,423.83/542,666.75
  6. Step 6: Final answer
    x = 415,361.14

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Double scale
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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.