Home / 991,309.32-1,367,960.40-561,592.98

Finding the Fourth Proportional to 991,309.32, 1,367,960.40 and 561,592.98

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Solution

The fourth proportional to 991,309.32, 1,367,960.40 and 561,592.98 is: 774,971.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,309.32 : 1,367,960.40 = 561,592.98 : x
  2. Step 2: Convert to fraction form
    991,309.32/1,367,960.40 = 561,592.98/x
  3. Step 3: Cross multiply
    991,309.32x = 1,367,960.40 × 561,592.98
  4. Step 4: Simplify right side
    991,309.32x = 768,236,957,557.99
  5. Step 5: Solve for x
    x = 768,236,957,557.99/991,309.32
  6. Step 6: Final answer
    x = 774,971.99

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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.