Home / 902,420.66-1,245,320.53-494,513.57

Finding the Fourth Proportional to 902,420.66, 1,245,320.53 and 494,513.57

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Solution

The fourth proportional to 902,420.66, 1,245,320.53 and 494,513.57 is: 682,417.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,420.66 : 1,245,320.53 = 494,513.57 : x
  2. Step 2: Convert to fraction form
    902,420.66/1,245,320.53 = 494,513.57/x
  3. Step 3: Cross multiply
    902,420.66x = 1,245,320.53 × 494,513.57
  4. Step 4: Simplify right side
    902,420.66x = 615,827,902,961.61
  5. Step 5: Solve for x
    x = 615,827,902,961.61/902,420.66
  6. Step 6: Final answer
    x = 682,417.78

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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.