Home / 867,694,438.51-1,197,592,123.40-515,466,103.75

Finding the Fourth Proportional to 867,694,438.51, 1,197,592,123.40 and 515,466,103.75

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Solution

The fourth proportional to 867,694,438.51, 1,197,592,123.40 and 515,466,103.75 is: 711,446,470.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,694,438.51 : 1,197,592,123.40 = 515,466,103.75 : x
  2. Step 2: Convert to fraction form
    867,694,438.51/1,197,592,123.40 = 515,466,103.75/x
  3. Step 3: Cross multiply
    867,694,438.51x = 1,197,592,123.40 × 515,466,103.75
  4. Step 4: Simplify right side
    867,694,438.51x = 617,318,145,730,687,232
  5. Step 5: Solve for x
    x = 617,318,145,730,687,232/867,694,438.51
  6. Step 6: Final answer
    x = 711,446,470.48

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Double scale
Find fourth proportional to 867,694,439.51, 1,197,592,124.78 and 515,466,104.75
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1.5x scale

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.