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Finding the Fourth Proportional to 1,224,312.40, 1,836,468.60 and 885,764.80

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Solution

The fourth proportional to 1,224,312.40, 1,836,468.60 and 885,764.80 is: 1,328,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,312.40 : 1,836,468.60 = 885,764.80 : x
  2. Step 2: Convert to fraction form
    1,224,312.40/1,836,468.60 = 885,764.80/x
  3. Step 3: Cross multiply
    1,224,312.40x = 1,836,468.60 × 885,764.80
  4. Step 4: Simplify right side
    1,224,312.40x = 1,626,679,242,185.28
  5. Step 5: Solve for x
    x = 1,626,679,242,185.28/1,224,312.40
  6. Step 6: Final answer
    x = 1,328,647.20

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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.