Home / 920,384.71-1,380,671.52-352,243.72

Finding the Fourth Proportional to 920,384.71, 1,380,671.52 and 352,243.72

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Solution

The fourth proportional to 920,384.71, 1,380,671.52 and 352,243.72 is: 528,401.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,384.71 : 1,380,671.52 = 352,243.72 : x
  2. Step 2: Convert to fraction form
    920,384.71/1,380,671.52 = 352,243.72/x
  3. Step 3: Cross multiply
    920,384.71x = 1,380,671.52 × 352,243.72
  4. Step 4: Simplify right side
    920,384.71x = 486,332,872,707.78
  5. Step 5: Solve for x
    x = 486,332,872,707.78/920,384.71
  6. Step 6: Final answer
    x = 528,401.73

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Double scale
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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.