Home / 641,828.32-885,730.08-355,353.52

Finding the Fourth Proportional to 641,828.32, 885,730.08 and 355,353.52

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Solution

The fourth proportional to 641,828.32, 885,730.08 and 355,353.52 is: 490,391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,828.32 : 885,730.08 = 355,353.52 : x
  2. Step 2: Convert to fraction form
    641,828.32/885,730.08 = 355,353.52/x
  3. Step 3: Cross multiply
    641,828.32x = 885,730.08 × 355,353.52
  4. Step 4: Simplify right side
    641,828.32x = 314,747,301,697.88
  5. Step 5: Solve for x
    x = 314,747,301,697.88/641,828.32
  6. Step 6: Final answer
    x = 490,391.73

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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.