Home / 354,294,356.40-531,441,534.60-319,856,979.60

Finding the Fourth Proportional to 354,294,356.40, 531,441,534.60 and 319,856,979.60

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Solution

The fourth proportional to 354,294,356.40, 531,441,534.60 and 319,856,979.60 is: 479,785,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,294,356.40 : 531,441,534.60 = 319,856,979.60 : x
  2. Step 2: Convert to fraction form
    354,294,356.40/531,441,534.60 = 319,856,979.60/x
  3. Step 3: Cross multiply
    354,294,356.40x = 531,441,534.60 × 319,856,979.60
  4. Step 4: Simplify right side
    354,294,356.40x = 169,985,284,091,144,928
  5. Step 5: Solve for x
    x = 169,985,284,091,144,928/354,294,356.40
  6. Step 6: Final answer
    x = 479,785,469.40

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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.