Home / 840,306.48-1,159,720.96-477,784.64

Finding the Fourth Proportional to 840,306.48, 1,159,720.96 and 477,784.64

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Solution

The fourth proportional to 840,306.48, 1,159,720.96 and 477,784.64 is: 659,398.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,306.48 : 1,159,720.96 = 477,784.64 : x
  2. Step 2: Convert to fraction form
    840,306.48/1,159,720.96 = 477,784.64/x
  3. Step 3: Cross multiply
    840,306.48x = 1,159,720.96 × 477,784.64
  4. Step 4: Simplify right side
    840,306.48x = 554,096,861,374.05
  5. Step 5: Solve for x
    x = 554,096,861,374.05/840,306.48
  6. Step 6: Final answer
    x = 659,398.53

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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.