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Finding the Fourth Proportional to 618,343.55, 853,312.19 and 342,718.98

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Solution

The fourth proportional to 618,343.55, 853,312.19 and 342,718.98 is: 472,951.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,343.55 : 853,312.19 = 342,718.98 : x
  2. Step 2: Convert to fraction form
    618,343.55/853,312.19 = 342,718.98/x
  3. Step 3: Cross multiply
    618,343.55x = 853,312.19 × 342,718.98
  4. Step 4: Simplify right side
    618,343.55x = 292,446,281,664.77
  5. Step 5: Solve for x
    x = 292,446,281,664.77/618,343.55
  6. Step 6: Final answer
    x = 472,951.14

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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.