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Finding the Fourth Proportional to 630,919.91, 870,745.88 and 359,053.94

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Solution

The fourth proportional to 630,919.91, 870,745.88 and 359,053.94 is: 495,537.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,919.91 : 870,745.88 = 359,053.94 : x
  2. Step 2: Convert to fraction form
    630,919.91/870,745.88 = 359,053.94/x
  3. Step 3: Cross multiply
    630,919.91x = 870,745.88 × 359,053.94
  4. Step 4: Simplify right side
    630,919.91x = 312,644,738,952.77
  5. Step 5: Solve for x
    x = 312,644,738,952.77/630,919.91
  6. Step 6: Final answer
    x = 495,537.92

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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.