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Finding the Fourth Proportional to 884,637.20, 1,323,019.20 and 742,919.60

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Solution

The fourth proportional to 884,637.20, 1,323,019.20 and 742,919.60 is: 1,111,073.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,637.20 : 1,323,019.20 = 742,919.60 : x
  2. Step 2: Convert to fraction form
    884,637.20/1,323,019.20 = 742,919.60/x
  3. Step 3: Cross multiply
    884,637.20x = 1,323,019.20 × 742,919.60
  4. Step 4: Simplify right side
    884,637.20x = 982,896,894,856.32
  5. Step 5: Solve for x
    x = 982,896,894,856.32/884,637.20
  6. Step 6: Final answer
    x = 1,111,073.44

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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.