Home / 990,166.80-1,488,421.35-919,964.10

Finding the Fourth Proportional to 990,166.80, 1,488,421.35 and 919,964.10

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Solution

The fourth proportional to 990,166.80, 1,488,421.35 and 919,964.10 is: 1,382,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,166.80 : 1,488,421.35 = 919,964.10 : x
  2. Step 2: Convert to fraction form
    990,166.80/1,488,421.35 = 919,964.10/x
  3. Step 3: Cross multiply
    990,166.80x = 1,488,421.35 × 919,964.10
  4. Step 4: Simplify right side
    990,166.80x = 1,369,294,207,673.54
  5. Step 5: Solve for x
    x = 1,369,294,207,673.54/990,166.80
  6. Step 6: Final answer
    x = 1,382,892.47

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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.