Home / 1,980,228.47-2,970,982.40-915,968.66

Finding the Fourth Proportional to 1,980,228.47, 2,970,982.40 and 915,968.66

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Solution

The fourth proportional to 1,980,228.47, 2,970,982.40 and 915,968.66 is: 1,374,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,228.47 : 2,970,982.40 = 915,968.66 : x
  2. Step 2: Convert to fraction form
    1,980,228.47/2,970,982.40 = 915,968.66/x
  3. Step 3: Cross multiply
    1,980,228.47x = 2,970,982.40 × 915,968.66
  4. Step 4: Simplify right side
    1,980,228.47x = 2,721,326,748,376.83
  5. Step 5: Solve for x
    x = 2,721,326,748,376.83/1,980,228.47
  6. Step 6: Final answer
    x = 1,374,248.88

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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.