Home / 991,487.13-1,486,965.02-430,388.25

Finding the Fourth Proportional to 991,487.13, 1,486,965.02 and 430,388.25

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Solution

The fourth proportional to 991,487.13, 1,486,965.02 and 430,388.25 is: 645,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,487.13 : 1,486,965.02 = 430,388.25 : x
  2. Step 2: Convert to fraction form
    991,487.13/1,486,965.02 = 430,388.25/x
  3. Step 3: Cross multiply
    991,487.13x = 1,486,965.02 × 430,388.25
  4. Step 4: Simplify right side
    991,487.13x = 639,972,270,617.07
  5. Step 5: Solve for x
    x = 639,972,270,617.07/991,487.13
  6. Step 6: Final answer
    x = 645,467.05

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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.