Home / 690,903.05-1,036,354.58-646,616.30

Finding the Fourth Proportional to 690,903.05, 1,036,354.58 and 646,616.30

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Solution

The fourth proportional to 690,903.05, 1,036,354.58 and 646,616.30 is: 969,924.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,903.05 : 1,036,354.58 = 646,616.30 : x
  2. Step 2: Convert to fraction form
    690,903.05/1,036,354.58 = 646,616.30/x
  3. Step 3: Cross multiply
    690,903.05x = 1,036,354.58 × 646,616.30
  4. Step 4: Simplify right side
    690,903.05x = 670,123,760,774.57
  5. Step 5: Solve for x
    x = 670,123,760,774.57/690,903.05
  6. Step 6: Final answer
    x = 969,924.45

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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.