Home / 768,123.75-1,151,877.54-318,539.19

Finding the Fourth Proportional to 768,123.75, 1,151,877.54 and 318,539.19

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Solution

The fourth proportional to 768,123.75, 1,151,877.54 and 318,539.19 is: 477,681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,123.75 : 1,151,877.54 = 318,539.19 : x
  2. Step 2: Convert to fraction form
    768,123.75/1,151,877.54 = 318,539.19/x
  3. Step 3: Cross multiply
    768,123.75x = 1,151,877.54 × 318,539.19
  4. Step 4: Simplify right side
    768,123.75x = 366,918,138,570.79
  5. Step 5: Solve for x
    x = 366,918,138,570.79/768,123.75
  6. Step 6: Final answer
    x = 477,681.02

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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.