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Finding the Fourth Proportional to 885,771.60, 1,328,851.80 and 286,630.80

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Solution

The fourth proportional to 885,771.60, 1,328,851.80 and 286,630.80 is: 430,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,771.60 : 1,328,851.80 = 286,630.80 : x
  2. Step 2: Convert to fraction form
    885,771.60/1,328,851.80 = 286,630.80/x
  3. Step 3: Cross multiply
    885,771.60x = 1,328,851.80 × 286,630.80
  4. Step 4: Simplify right side
    885,771.60x = 380,889,854,515.44
  5. Step 5: Solve for x
    x = 380,889,854,515.44/885,771.60
  6. Step 6: Final answer
    x = 430,009.11

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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.