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Finding the Fourth Proportional to 611,441.25, 843,772.71 and 339,502.15

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Solution

The fourth proportional to 611,441.25, 843,772.71 and 339,502.15 is: 468,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,441.25 : 843,772.71 = 339,502.15 : x
  2. Step 2: Convert to fraction form
    611,441.25/843,772.71 = 339,502.15/x
  3. Step 3: Cross multiply
    611,441.25x = 843,772.71 × 339,502.15
  4. Step 4: Simplify right side
    611,441.25x = 286,462,649,574.48
  5. Step 5: Solve for x
    x = 286,462,649,574.48/611,441.25
  6. Step 6: Final answer
    x = 468,503.97

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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.