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Finding the Fourth Proportional to 623,612.80, 935,694.60 and 303,587.20

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Solution

The fourth proportional to 623,612.80, 935,694.60 and 303,587.20 is: 455,514.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,612.80 : 935,694.60 = 303,587.20 : x
  2. Step 2: Convert to fraction form
    623,612.80/935,694.60 = 303,587.20/x
  3. Step 3: Cross multiply
    623,612.80x = 935,694.60 × 303,587.20
  4. Step 4: Simplify right side
    623,612.80x = 284,064,903,669.12
  5. Step 5: Solve for x
    x = 284,064,903,669.12/623,612.80
  6. Step 6: Final answer
    x = 455,514.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.