Home / 991,961.20-1,368,810.48-556,395.76

Finding the Fourth Proportional to 991,961.20, 1,368,810.48 and 556,395.76

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Solution

The fourth proportional to 991,961.20, 1,368,810.48 and 556,395.76 is: 767,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,961.20 : 1,368,810.48 = 556,395.76 : x
  2. Step 2: Convert to fraction form
    991,961.20/1,368,810.48 = 556,395.76/x
  3. Step 3: Cross multiply
    991,961.20x = 1,368,810.48 × 556,395.76
  4. Step 4: Simplify right side
    991,961.20x = 761,600,347,315.57
  5. Step 5: Solve for x
    x = 761,600,347,315.57/991,961.20
  6. Step 6: Final answer
    x = 767,772.32

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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.