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Finding the Fourth Proportional to 885,875.60, 1,328,813.40 and 728,411.60

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Solution

The fourth proportional to 885,875.60, 1,328,813.40 and 728,411.60 is: 1,092,617.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,875.60 : 1,328,813.40 = 728,411.60 : x
  2. Step 2: Convert to fraction form
    885,875.60/1,328,813.40 = 728,411.60/x
  3. Step 3: Cross multiply
    885,875.60x = 1,328,813.40 × 728,411.60
  4. Step 4: Simplify right side
    885,875.60x = 967,923,094,795.44
  5. Step 5: Solve for x
    x = 967,923,094,795.44/885,875.60
  6. Step 6: Final answer
    x = 1,092,617.40

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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.