Home / 991,969.52-1,488,145.80-423,342.32

Finding the Fourth Proportional to 991,969.52, 1,488,145.80 and 423,342.32

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Solution

The fourth proportional to 991,969.52, 1,488,145.80 and 423,342.32 is: 635,095.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,969.52 : 1,488,145.80 = 423,342.32 : x
  2. Step 2: Convert to fraction form
    991,969.52/1,488,145.80 = 423,342.32/x
  3. Step 3: Cross multiply
    991,969.52x = 1,488,145.80 × 423,342.32
  4. Step 4: Simplify right side
    991,969.52x = 629,995,095,470.26
  5. Step 5: Solve for x
    x = 629,995,095,470.26/991,969.52
  6. Step 6: Final answer
    x = 635,095.21

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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.