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Finding the Fourth Proportional to 767,625.60, 1,152,820.80 and 742,742.40

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Solution

The fourth proportional to 767,625.60, 1,152,820.80 and 742,742.40 is: 1,115,451.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,625.60 : 1,152,820.80 = 742,742.40 : x
  2. Step 2: Convert to fraction form
    767,625.60/1,152,820.80 = 742,742.40/x
  3. Step 3: Cross multiply
    767,625.60x = 1,152,820.80 × 742,742.40
  4. Step 4: Simplify right side
    767,625.60x = 856,248,887,761.92
  5. Step 5: Solve for x
    x = 856,248,887,761.92/767,625.60
  6. Step 6: Final answer
    x = 1,115,451.19

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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.