Home / 809,512,120.56-1,117,127,100.70-438,234,152.34

Finding the Fourth Proportional to 809,512,120.56, 1,117,127,100.70 and 438,234,152.34

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Solution

The fourth proportional to 809,512,120.56, 1,117,127,100.70 and 438,234,152.34 is: 604,763,332.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,512,120.56 : 1,117,127,100.70 = 438,234,152.34 : x
  2. Step 2: Convert to fraction form
    809,512,120.56/1,117,127,100.70 = 438,234,152.34/x
  3. Step 3: Cross multiply
    809,512,120.56x = 1,117,127,100.70 × 438,234,152.34
  4. Step 4: Simplify right side
    809,512,120.56x = 489,563,248,031,306,304
  5. Step 5: Solve for x
    x = 489,563,248,031,306,304/809,512,120.56
  6. Step 6: Final answer
    x = 604,763,332.87

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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.