Home / 905,479.66-1,358,260.73-640,423.46

Finding the Fourth Proportional to 905,479.66, 1,358,260.73 and 640,423.46

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Solution

The fourth proportional to 905,479.66, 1,358,260.73 and 640,423.46 is: 960,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,479.66 : 1,358,260.73 = 640,423.46 : x
  2. Step 2: Convert to fraction form
    905,479.66/1,358,260.73 = 640,423.46/x
  3. Step 3: Cross multiply
    905,479.66x = 1,358,260.73 × 640,423.46
  4. Step 4: Simplify right side
    905,479.66x = 869,862,037,082.66
  5. Step 5: Solve for x
    x = 869,862,037,082.66/905,479.66
  6. Step 6: Final answer
    x = 960,664.36

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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.