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Finding the Fourth Proportional to 5,275,308.06, 7,911,854.82 and 1,487,905.20

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Solution

The fourth proportional to 5,275,308.06, 7,911,854.82 and 1,487,905.20 is: 2,231,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275,308.06 : 7,911,854.82 = 1,487,905.20 : x
  2. Step 2: Convert to fraction form
    5,275,308.06/7,911,854.82 = 1,487,905.20/x
  3. Step 3: Cross multiply
    5,275,308.06x = 7,911,854.82 × 1,487,905.20
  4. Step 4: Simplify right side
    5,275,308.06x = 11,772,089,928,323.06
  5. Step 5: Solve for x
    x = 11,772,089,928,323.06/5,275,308.06
  6. Step 6: Final answer
    x = 2,231,545.49

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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.