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Finding the Fourth Proportional to 666,021.60, 999,032.40 and 453,445.20

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Solution

The fourth proportional to 666,021.60, 999,032.40 and 453,445.20 is: 680,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,021.60 : 999,032.40 = 453,445.20 : x
  2. Step 2: Convert to fraction form
    666,021.60/999,032.40 = 453,445.20/x
  3. Step 3: Cross multiply
    666,021.60x = 999,032.40 × 453,445.20
  4. Step 4: Simplify right side
    666,021.60x = 453,006,446,424.48
  5. Step 5: Solve for x
    x = 453,006,446,424.48/666,021.60
  6. Step 6: Final answer
    x = 680,167.80

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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.