Home / 991,075.96-1,367,359.56-555,429.66

Finding the Fourth Proportional to 991,075.96, 1,367,359.56 and 555,429.66

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Solution

The fourth proportional to 991,075.96, 1,367,359.56 and 555,429.66 is: 766,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,075.96 : 1,367,359.56 = 555,429.66 : x
  2. Step 2: Convert to fraction form
    991,075.96/1,367,359.56 = 555,429.66/x
  3. Step 3: Cross multiply
    991,075.96x = 1,367,359.56 × 555,429.66
  4. Step 4: Simplify right side
    991,075.96x = 759,472,048,818.75
  5. Step 5: Solve for x
    x = 759,472,048,818.75/991,075.96
  6. Step 6: Final answer
    x = 766,310.64

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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.