Home / 739,208.12-1,108,820.97-290,140.47

Finding the Fourth Proportional to 739,208.12, 1,108,820.97 and 290,140.47

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Solution

The fourth proportional to 739,208.12, 1,108,820.97 and 290,140.47 is: 435,214.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,208.12 : 1,108,820.97 = 290,140.47 : x
  2. Step 2: Convert to fraction form
    739,208.12/1,108,820.97 = 290,140.47/x
  3. Step 3: Cross multiply
    739,208.12x = 1,108,820.97 × 290,140.47
  4. Step 4: Simplify right side
    739,208.12x = 321,713,837,381.66
  5. Step 5: Solve for x
    x = 321,713,837,381.66/739,208.12
  6. Step 6: Final answer
    x = 435,214.16

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1.5x scale

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.