Home / 690,343.04-1,035,329.28-290,986.88

Finding the Fourth Proportional to 690,343.04, 1,035,329.28 and 290,986.88

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Solution

The fourth proportional to 690,343.04, 1,035,329.28 and 290,986.88 is: 436,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,343.04 : 1,035,329.28 = 290,986.88 : x
  2. Step 2: Convert to fraction form
    690,343.04/1,035,329.28 = 290,986.88/x
  3. Step 3: Cross multiply
    690,343.04x = 1,035,329.28 × 290,986.88
  4. Step 4: Simplify right side
    690,343.04x = 301,267,236,959.85
  5. Step 5: Solve for x
    x = 301,267,236,959.85/690,343.04
  6. Step 6: Final answer
    x = 436,402.22

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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.