Home / 991,970.52-1,488,147.30-423,343.32

Finding the Fourth Proportional to 991,970.52, 1,488,147.30 and 423,343.32

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Solution

The fourth proportional to 991,970.52, 1,488,147.30 and 423,343.32 is: 635,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,970.52 : 1,488,147.30 = 423,343.32 : x
  2. Step 2: Convert to fraction form
    991,970.52/1,488,147.30 = 423,343.32/x
  3. Step 3: Cross multiply
    991,970.52x = 1,488,147.30 × 423,343.32
  4. Step 4: Simplify right side
    991,970.52x = 629,997,218,631.04
  5. Step 5: Solve for x
    x = 629,997,218,631.04/991,970.52
  6. Step 6: Final answer
    x = 635,096.72

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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.