Home / 287,313,848.40-430,970,778.29-68,964,190.46

Finding the Fourth Proportional to 287,313,848.40, 430,970,778.29 and 68,964,190.46

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Solution

The fourth proportional to 287,313,848.40, 430,970,778.29 and 68,964,190.46 is: 103,446,287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,313,848.40 : 430,970,778.29 = 68,964,190.46 : x
  2. Step 2: Convert to fraction form
    287,313,848.40/430,970,778.29 = 68,964,190.46/x
  3. Step 3: Cross multiply
    287,313,848.40x = 430,970,778.29 × 68,964,190.46
  4. Step 4: Simplify right side
    287,313,848.40x = 29,721,550,836,319,688
  5. Step 5: Solve for x
    x = 29,721,550,836,319,688/287,313,848.40
  6. Step 6: Final answer
    x = 103,446,287.06

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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.