Home / 838,561,138.40-1,257,841,707.60-256,294,258.40

Finding the Fourth Proportional to 838,561,138.40, 1,257,841,707.60 and 256,294,258.40

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Solution

The fourth proportional to 838,561,138.40, 1,257,841,707.60 and 256,294,258.40 is: 384,441,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,561,138.40 : 1,257,841,707.60 = 256,294,258.40 : x
  2. Step 2: Convert to fraction form
    838,561,138.40/1,257,841,707.60 = 256,294,258.40/x
  3. Step 3: Cross multiply
    838,561,138.40x = 1,257,841,707.60 × 256,294,258.40
  4. Step 4: Simplify right side
    838,561,138.40x = 322,377,607,633,931,648
  5. Step 5: Solve for x
    x = 322,377,607,633,931,648/838,561,138.40
  6. Step 6: Final answer
    x = 384,441,387.60

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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.