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Finding the Fourth Proportional to 885,515, 1,328,272.50 and 294,539

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Solution

The fourth proportional to 885,515, 1,328,272.50 and 294,539 is: 441,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,515 : 1,328,272.50 = 294,539 : x
  2. Step 2: Convert to fraction form
    885,515/1,328,272.50 = 294,539/x
  3. Step 3: Cross multiply
    885,515x = 1,328,272.50 × 294,539
  4. Step 4: Simplify right side
    885,515x = 391,228,053,877.50
  5. Step 5: Solve for x
    x = 391,228,053,877.50/885,515
  6. Step 6: Final answer
    x = 441,808.50

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1.5x scale

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.