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Finding the Fourth Proportional to 646,296, 891,657.61 and 374,215.38

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Solution

The fourth proportional to 646,296, 891,657.61 and 374,215.38 is: 516,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,296 : 891,657.61 = 374,215.38 : x
  2. Step 2: Convert to fraction form
    646,296/891,657.61 = 374,215.38/x
  3. Step 3: Cross multiply
    646,296x = 891,657.61 × 374,215.38
  4. Step 4: Simplify right side
    646,296x = 333,671,991,356.04
  5. Step 5: Solve for x
    x = 333,671,991,356.04/646,296
  6. Step 6: Final answer
    x = 516,283.55

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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.