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Finding the Fourth Proportional to 618,832,085.76, 928,353,882.24 and 255,127,622.40

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Solution

The fourth proportional to 618,832,085.76, 928,353,882.24 and 255,127,622.40 is: 382,735,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,832,085.76 : 928,353,882.24 = 255,127,622.40 : x
  2. Step 2: Convert to fraction form
    618,832,085.76/928,353,882.24 = 255,127,622.40/x
  3. Step 3: Cross multiply
    618,832,085.76x = 928,353,882.24 × 255,127,622.40
  4. Step 4: Simplify right side
    618,832,085.76x = 236,848,718,721,700,800
  5. Step 5: Solve for x
    x = 236,848,718,721,700,800/618,832,085.76
  6. Step 6: Final answer
    x = 382,735,032.93

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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.