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Finding the Fourth Proportional to 618,355.07, 853,328.11 and 342,730.52

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Solution

The fourth proportional to 618,355.07, 853,328.11 and 342,730.52 is: 472,967.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,355.07 : 853,328.11 = 342,730.52 : x
  2. Step 2: Convert to fraction form
    618,355.07/853,328.11 = 342,730.52/x
  3. Step 3: Cross multiply
    618,355.07x = 853,328.11 × 342,730.52
  4. Step 4: Simplify right side
    618,355.07x = 292,461,586,870.92
  5. Step 5: Solve for x
    x = 292,461,586,870.92/618,355.07
  6. Step 6: Final answer
    x = 472,967.07

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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.