Home / 991,849.44-1,486,866.96-430,681.44

Finding the Fourth Proportional to 991,849.44, 1,486,866.96 and 430,681.44

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Solution

The fourth proportional to 991,849.44, 1,486,866.96 and 430,681.44 is: 645,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,849.44 : 1,486,866.96 = 430,681.44 : x
  2. Step 2: Convert to fraction form
    991,849.44/1,486,866.96 = 430,681.44/x
  3. Step 3: Cross multiply
    991,849.44x = 1,486,866.96 × 430,681.44
  4. Step 4: Simplify right side
    991,849.44x = 640,366,003,421.22
  5. Step 5: Solve for x
    x = 640,366,003,421.22/991,849.44
  6. Step 6: Final answer
    x = 645,628.24

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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.