Home / 1,319,132.70-1,978,699.05-787,254.30

Finding the Fourth Proportional to 1,319,132.70, 1,978,699.05 and 787,254.30

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Solution

The fourth proportional to 1,319,132.70, 1,978,699.05 and 787,254.30 is: 1,180,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,132.70 : 1,978,699.05 = 787,254.30 : x
  2. Step 2: Convert to fraction form
    1,319,132.70/1,978,699.05 = 787,254.30/x
  3. Step 3: Cross multiply
    1,319,132.70x = 1,978,699.05 × 787,254.30
  4. Step 4: Simplify right side
    1,319,132.70x = 1,557,739,335,518.42
  5. Step 5: Solve for x
    x = 1,557,739,335,518.42/1,319,132.70
  6. Step 6: Final answer
    x = 1,180,881.45

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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.