Home / 991,248.06-1,367,976.40-561,611.91

Finding the Fourth Proportional to 991,248.06, 1,367,976.40 and 561,611.91

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Solution

The fourth proportional to 991,248.06, 1,367,976.40 and 561,611.91 is: 775,055.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,248.06 : 1,367,976.40 = 561,611.91 : x
  2. Step 2: Convert to fraction form
    991,248.06/1,367,976.40 = 561,611.91/x
  3. Step 3: Cross multiply
    991,248.06x = 1,367,976.40 × 561,611.91
  4. Step 4: Simplify right side
    991,248.06x = 768,271,842,564.81
  5. Step 5: Solve for x
    x = 768,271,842,564.81/991,248.06
  6. Step 6: Final answer
    x = 775,055.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.