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Finding the Fourth Proportional to 805,654.40, 1,111,816 and 443,094.40

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Solution

The fourth proportional to 805,654.40, 1,111,816 and 443,094.40 is: 611,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,654.40 : 1,111,816 = 443,094.40 : x
  2. Step 2: Convert to fraction form
    805,654.40/1,111,816 = 443,094.40/x
  3. Step 3: Cross multiply
    805,654.40x = 1,111,816 × 443,094.40
  4. Step 4: Simplify right side
    805,654.40x = 492,639,443,430.40
  5. Step 5: Solve for x
    x = 492,639,443,430.40/805,654.40
  6. Step 6: Final answer
    x = 611,477.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.