Home / 641,925.32-885,846.09-355,439.24

Finding the Fourth Proportional to 641,925.32, 885,846.09 and 355,439.24

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Solution

The fourth proportional to 641,925.32, 885,846.09 and 355,439.24 is: 490,500.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,925.32 : 885,846.09 = 355,439.24 : x
  2. Step 2: Convert to fraction form
    641,925.32/885,846.09 = 355,439.24/x
  3. Step 3: Cross multiply
    641,925.32x = 885,846.09 × 355,439.24
  4. Step 4: Simplify right side
    641,925.32x = 314,864,460,986.57
  5. Step 5: Solve for x
    x = 314,864,460,986.57/641,925.32
  6. Step 6: Final answer
    x = 490,500.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.