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Finding the Fourth Proportional to 1,742,721.55, 2,608,487.96 and 931,077.72

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Solution

The fourth proportional to 1,742,721.55, 2,608,487.96 and 931,077.72 is: 1,393,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742,721.55 : 2,608,487.96 = 931,077.72 : x
  2. Step 2: Convert to fraction form
    1,742,721.55/2,608,487.96 = 931,077.72/x
  3. Step 3: Cross multiply
    1,742,721.55x = 2,608,487.96 × 931,077.72
  4. Step 4: Simplify right side
    1,742,721.55x = 2,428,705,017,788.86
  5. Step 5: Solve for x
    x = 2,428,705,017,788.86/1,742,721.55
  6. Step 6: Final answer
    x = 1,393,627.70

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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.