Home / 812,123,365.71-1,120,731,665.36-440,845,648.59

Finding the Fourth Proportional to 812,123,365.71, 1,120,731,665.36 and 440,845,648.59

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Solution

The fourth proportional to 812,123,365.71, 1,120,731,665.36 and 440,845,648.59 is: 608,367,766.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,123,365.71 : 1,120,731,665.36 = 440,845,648.59 : x
  2. Step 2: Convert to fraction form
    812,123,365.71/1,120,731,665.36 = 440,845,648.59/x
  3. Step 3: Cross multiply
    812,123,365.71x = 1,120,731,665.36 × 440,845,648.59
  4. Step 4: Simplify right side
    812,123,365.71x = 494,069,677,910,979,968
  5. Step 5: Solve for x
    x = 494,069,677,910,979,968/812,123,365.71
  6. Step 6: Final answer
    x = 608,367,766.24

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Double scale
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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.