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Finding the Fourth Proportional to 1,809,531.60, 2,712,985.20 and 744,025.20

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Solution

The fourth proportional to 1,809,531.60, 2,712,985.20 and 744,025.20 is: 1,115,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809,531.60 : 2,712,985.20 = 744,025.20 : x
  2. Step 2: Convert to fraction form
    1,809,531.60/2,712,985.20 = 744,025.20/x
  3. Step 3: Cross multiply
    1,809,531.60x = 2,712,985.20 × 744,025.20
  4. Step 4: Simplify right side
    1,809,531.60x = 2,018,529,356,027.04
  5. Step 5: Solve for x
    x = 2,018,529,356,027.04/1,809,531.60
  6. Step 6: Final answer
    x = 1,115,498.26

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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.