Home / 710,895.41-981,211.96-405,153.12

Finding the Fourth Proportional to 710,895.41, 981,211.96 and 405,153.12

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Solution

The fourth proportional to 710,895.41, 981,211.96 and 405,153.12 is: 559,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,895.41 : 981,211.96 = 405,153.12 : x
  2. Step 2: Convert to fraction form
    710,895.41/981,211.96 = 405,153.12/x
  3. Step 3: Cross multiply
    710,895.41x = 981,211.96 × 405,153.12
  4. Step 4: Simplify right side
    710,895.41x = 397,541,086,975.32
  5. Step 5: Solve for x
    x = 397,541,086,975.32/710,895.41
  6. Step 6: Final answer
    x = 559,211.78

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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.