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Finding the Fourth Proportional to 618,547.62, 853,581.23 and 363,915.18

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Solution

The fourth proportional to 618,547.62, 853,581.23 and 363,915.18 is: 502,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,547.62 : 853,581.23 = 363,915.18 : x
  2. Step 2: Convert to fraction form
    618,547.62/853,581.23 = 363,915.18/x
  3. Step 3: Cross multiply
    618,547.62x = 853,581.23 × 363,915.18
  4. Step 4: Simplify right side
    618,547.62x = 310,631,166,960.07
  5. Step 5: Solve for x
    x = 310,631,166,960.07/618,547.62
  6. Step 6: Final answer
    x = 502,194.43

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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.