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Finding the Fourth Proportional to 881,978.40, 1,320,343.20 and 526,809.60

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Solution

The fourth proportional to 881,978.40, 1,320,343.20 and 526,809.60 is: 788,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,978.40 : 1,320,343.20 = 526,809.60 : x
  2. Step 2: Convert to fraction form
    881,978.40/1,320,343.20 = 526,809.60/x
  3. Step 3: Cross multiply
    881,978.40x = 1,320,343.20 × 526,809.60
  4. Step 4: Simplify right side
    881,978.40x = 695,569,473,054.72
  5. Step 5: Solve for x
    x = 695,569,473,054.72/881,978.40
  6. Step 6: Final answer
    x = 788,646.83

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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.