Home / 991,212.98-1,367,901.90-561,492.98

Finding the Fourth Proportional to 991,212.98, 1,367,901.90 and 561,492.98

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Solution

The fourth proportional to 991,212.98, 1,367,901.90 and 561,492.98 is: 774,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,212.98 : 1,367,901.90 = 561,492.98 : x
  2. Step 2: Convert to fraction form
    991,212.98/1,367,901.90 = 561,492.98/x
  3. Step 3: Cross multiply
    991,212.98x = 1,367,901.90 × 561,492.98
  4. Step 4: Simplify right side
    991,212.98x = 768,067,314,178.66
  5. Step 5: Solve for x
    x = 768,067,314,178.66/991,212.98
  6. Step 6: Final answer
    x = 774,876.17

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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.