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Finding the Fourth Proportional to 885,514, 1,328,400.60 and 286,276

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Solution

The fourth proportional to 885,514, 1,328,400.60 and 286,276 is: 429,455.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,514 : 1,328,400.60 = 286,276 : x
  2. Step 2: Convert to fraction form
    885,514/1,328,400.60 = 286,276/x
  3. Step 3: Cross multiply
    885,514x = 1,328,400.60 × 286,276
  4. Step 4: Simplify right side
    885,514x = 380,289,210,165.60
  5. Step 5: Solve for x
    x = 380,289,210,165.60/885,514
  6. Step 6: Final answer
    x = 429,455.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.