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Finding the Fourth Proportional to 672,813.61, 928,465.92 and 366,895.88

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Solution

The fourth proportional to 672,813.61, 928,465.92 and 366,895.88 is: 506,307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,813.61 : 928,465.92 = 366,895.88 : x
  2. Step 2: Convert to fraction form
    672,813.61/928,465.92 = 366,895.88/x
  3. Step 3: Cross multiply
    672,813.61x = 928,465.92 × 366,895.88
  4. Step 4: Simplify right side
    672,813.61x = 340,650,320,768.41
  5. Step 5: Solve for x
    x = 340,650,320,768.41/672,813.61
  6. Step 6: Final answer
    x = 506,307.12

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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.