Home / 690,737.20-1,031,039.83-640,081.06

Finding the Fourth Proportional to 690,737.20, 1,031,039.83 and 640,081.06

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Solution

The fourth proportional to 690,737.20, 1,031,039.83 and 640,081.06 is: 955,427.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,737.20 : 1,031,039.83 = 640,081.06 : x
  2. Step 2: Convert to fraction form
    690,737.20/1,031,039.83 = 640,081.06/x
  3. Step 3: Cross multiply
    690,737.20x = 1,031,039.83 × 640,081.06
  4. Step 4: Simplify right side
    690,737.20x = 659,949,064,088.22
  5. Step 5: Solve for x
    x = 659,949,064,088.22/690,737.20
  6. Step 6: Final answer
    x = 955,427.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.