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Finding the Fourth Proportional to 613,418.10, 846,555.66 and 371,721.84

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Solution

The fourth proportional to 613,418.10, 846,555.66 and 371,721.84 is: 512,999.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,418.10 : 846,555.66 = 371,721.84 : x
  2. Step 2: Convert to fraction form
    613,418.10/846,555.66 = 371,721.84/x
  3. Step 3: Cross multiply
    613,418.10x = 846,555.66 × 371,721.84
  4. Step 4: Simplify right side
    613,418.10x = 314,683,227,597.61
  5. Step 5: Solve for x
    x = 314,683,227,597.61/613,418.10
  6. Step 6: Final answer
    x = 512,999.58

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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.