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Finding the Fourth Proportional to 611,212.32, 843,480.36 and 339,285.60

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Solution

The fourth proportional to 611,212.32, 843,480.36 and 339,285.60 is: 468,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,212.32 : 843,480.36 = 339,285.60 : x
  2. Step 2: Convert to fraction form
    611,212.32/843,480.36 = 339,285.60/x
  3. Step 3: Cross multiply
    611,212.32x = 843,480.36 × 339,285.60
  4. Step 4: Simplify right side
    611,212.32x = 286,180,740,030.82
  5. Step 5: Solve for x
    x = 286,180,740,030.82/611,212.32
  6. Step 6: Final answer
    x = 468,218.21

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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.