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Finding the Fourth Proportional to 630,565.52, 870,180.42 and 404,211.02

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Solution

The fourth proportional to 630,565.52, 870,180.42 and 404,211.02 is: 557,811.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,565.52 : 870,180.42 = 404,211.02 : x
  2. Step 2: Convert to fraction form
    630,565.52/870,180.42 = 404,211.02/x
  3. Step 3: Cross multiply
    630,565.52x = 870,180.42 × 404,211.02
  4. Step 4: Simplify right side
    630,565.52x = 351,736,515,152.23
  5. Step 5: Solve for x
    x = 351,736,515,152.23/630,565.52
  6. Step 6: Final answer
    x = 557,811.21

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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.