Home / 991,694.40-1,486,669.38-393,075.86

Finding the Fourth Proportional to 991,694.40, 1,486,669.38 and 393,075.86

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Solution

The fourth proportional to 991,694.40, 1,486,669.38 and 393,075.86 is: 589,268.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,694.40 : 1,486,669.38 = 393,075.86 : x
  2. Step 2: Convert to fraction form
    991,694.40/1,486,669.38 = 393,075.86/x
  3. Step 3: Cross multiply
    991,694.40x = 1,486,669.38 × 393,075.86
  4. Step 4: Simplify right side
    991,694.40x = 584,373,845,079.17
  5. Step 5: Solve for x
    x = 584,373,845,079.17/991,694.40
  6. Step 6: Final answer
    x = 589,268.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.