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Finding the Fourth Proportional to 702,840.28, 969,920.04 and 380,550.60

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Solution

The fourth proportional to 702,840.28, 969,920.04 and 380,550.60 is: 525,160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,840.28 : 969,920.04 = 380,550.60 : x
  2. Step 2: Convert to fraction form
    702,840.28/969,920.04 = 380,550.60/x
  3. Step 3: Cross multiply
    702,840.28x = 969,920.04 × 380,550.60
  4. Step 4: Simplify right side
    702,840.28x = 369,103,653,174.02
  5. Step 5: Solve for x
    x = 369,103,653,174.02/702,840.28
  6. Step 6: Final answer
    x = 525,160.07

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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.