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Finding the Fourth Proportional to 542,328.48, 748,449.32 and 300,621.24

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Solution

The fourth proportional to 542,328.48, 748,449.32 and 300,621.24 is: 414,877.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,328.48 : 748,449.32 = 300,621.24 : x
  2. Step 2: Convert to fraction form
    542,328.48/748,449.32 = 300,621.24/x
  3. Step 3: Cross multiply
    542,328.48x = 748,449.32 × 300,621.24
  4. Step 4: Simplify right side
    542,328.48x = 224,999,761,152.45
  5. Step 5: Solve for x
    x = 224,999,761,152.45/542,328.48
  6. Step 6: Final answer
    x = 414,877.27

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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.