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Finding the Fourth Proportional to 485,502.13, 669,993.06 and 270,637.57

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Solution

The fourth proportional to 485,502.13, 669,993.06 and 270,637.57 is: 373,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,502.13 : 669,993.06 = 270,637.57 : x
  2. Step 2: Convert to fraction form
    485,502.13/669,993.06 = 270,637.57/x
  3. Step 3: Cross multiply
    485,502.13x = 669,993.06 × 270,637.57
  4. Step 4: Simplify right side
    485,502.13x = 181,325,293,675.26
  5. Step 5: Solve for x
    x = 181,325,293,675.26/485,502.13
  6. Step 6: Final answer
    x = 373,479.91

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1.5x scale

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.