Home / 690,923.65-1,035,599.31-420,455.26

Finding the Fourth Proportional to 690,923.65, 1,035,599.31 and 420,455.26

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Solution

The fourth proportional to 690,923.65, 1,035,599.31 and 420,455.26 is: 630,204.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,923.65 : 1,035,599.31 = 420,455.26 : x
  2. Step 2: Convert to fraction form
    690,923.65/1,035,599.31 = 420,455.26/x
  3. Step 3: Cross multiply
    690,923.65x = 1,035,599.31 × 420,455.26
  4. Step 4: Simplify right side
    690,923.65x = 435,423,171,963.87
  5. Step 5: Solve for x
    x = 435,423,171,963.87/690,923.65
  6. Step 6: Final answer
    x = 630,204.47

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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.