Home / 641,670.28-885,494.24-355,184.20

Finding the Fourth Proportional to 641,670.28, 885,494.24 and 355,184.20

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Solution

The fourth proportional to 641,670.28, 885,494.24 and 355,184.20 is: 490,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,670.28 : 885,494.24 = 355,184.20 : x
  2. Step 2: Convert to fraction form
    641,670.28/885,494.24 = 355,184.20/x
  3. Step 3: Cross multiply
    641,670.28x = 885,494.24 × 355,184.20
  4. Step 4: Simplify right side
    641,670.28x = 314,513,563,239.01
  5. Step 5: Solve for x
    x = 314,513,563,239.01/641,670.28
  6. Step 6: Final answer
    x = 490,148.25

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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.