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Finding the Fourth Proportional to 822,245.40, 1,233,368.10 and 790,752.60

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Solution

The fourth proportional to 822,245.40, 1,233,368.10 and 790,752.60 is: 1,186,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,245.40 : 1,233,368.10 = 790,752.60 : x
  2. Step 2: Convert to fraction form
    822,245.40/1,233,368.10 = 790,752.60/x
  3. Step 3: Cross multiply
    822,245.40x = 1,233,368.10 × 790,752.60
  4. Step 4: Simplify right side
    822,245.40x = 975,289,031,832.06
  5. Step 5: Solve for x
    x = 975,289,031,832.06/822,245.40
  6. Step 6: Final answer
    x = 1,186,128.90

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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.