Home / 769,637.80-1,153,679.10-349,215.40

Finding the Fourth Proportional to 769,637.80, 1,153,679.10 and 349,215.40

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Solution

The fourth proportional to 769,637.80, 1,153,679.10 and 349,215.40 is: 523,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,637.80 : 1,153,679.10 = 349,215.40 : x
  2. Step 2: Convert to fraction form
    769,637.80/1,153,679.10 = 349,215.40/x
  3. Step 3: Cross multiply
    769,637.80x = 1,153,679.10 × 349,215.40
  4. Step 4: Simplify right side
    769,637.80x = 402,882,508,378.14
  5. Step 5: Solve for x
    x = 402,882,508,378.14/769,637.80
  6. Step 6: Final answer
    x = 523,470.27

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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.