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Finding the Fourth Proportional to 885,703.60, 1,328,555.40 and 817,274.80

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Solution

The fourth proportional to 885,703.60, 1,328,555.40 and 817,274.80 is: 1,225,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,703.60 : 1,328,555.40 = 817,274.80 : x
  2. Step 2: Convert to fraction form
    885,703.60/1,328,555.40 = 817,274.80/x
  3. Step 3: Cross multiply
    885,703.60x = 1,328,555.40 × 817,274.80
  4. Step 4: Simplify right side
    885,703.60x = 1,085,794,848,823.92
  5. Step 5: Solve for x
    x = 1,085,794,848,823.92/885,703.60
  6. Step 6: Final answer
    x = 1,225,912.20

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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.