Home / 690,748.31-1,036,712.93-270,319.43

Finding the Fourth Proportional to 690,748.31, 1,036,712.93 and 270,319.43

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Solution

The fourth proportional to 690,748.31, 1,036,712.93 and 270,319.43 is: 405,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,748.31 : 1,036,712.93 = 270,319.43 : x
  2. Step 2: Convert to fraction form
    690,748.31/1,036,712.93 = 270,319.43/x
  3. Step 3: Cross multiply
    690,748.31x = 1,036,712.93 × 270,319.43
  4. Step 4: Simplify right side
    690,748.31x = 280,243,648,311.23
  5. Step 5: Solve for x
    x = 280,243,648,311.23/690,748.31
  6. Step 6: Final answer
    x = 405,710.22

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1.5x scale

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.