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Finding the Fourth Proportional to 542,279.40, 748,390.35 and 300,637.77

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Solution

The fourth proportional to 542,279.40, 748,390.35 and 300,637.77 is: 414,904.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,279.40 : 748,390.35 = 300,637.77 : x
  2. Step 2: Convert to fraction form
    542,279.40/748,390.35 = 300,637.77/x
  3. Step 3: Cross multiply
    542,279.40x = 748,390.35 × 300,637.77
  4. Step 4: Simplify right side
    542,279.40x = 224,994,405,913.52
  5. Step 5: Solve for x
    x = 224,994,405,913.52/542,279.40
  6. Step 6: Final answer
    x = 414,904.95

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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.