Home / 761,351.72-1,140,781.68-460,921.70

Finding the Fourth Proportional to 761,351.72, 1,140,781.68 and 460,921.70

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Solution

The fourth proportional to 761,351.72, 1,140,781.68 and 460,921.70 is: 690,628.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,351.72 : 1,140,781.68 = 460,921.70 : x
  2. Step 2: Convert to fraction form
    761,351.72/1,140,781.68 = 460,921.70/x
  3. Step 3: Cross multiply
    761,351.72x = 1,140,781.68 × 460,921.70
  4. Step 4: Simplify right side
    761,351.72x = 525,811,031,274.46
  5. Step 5: Solve for x
    x = 525,811,031,274.46/761,351.72
  6. Step 6: Final answer
    x = 690,628.28

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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.