Home / 716,671.32-988,985.46-394,381.23

Finding the Fourth Proportional to 716,671.32, 988,985.46 and 394,381.23

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Solution

The fourth proportional to 716,671.32, 988,985.46 and 394,381.23 is: 544,234.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,671.32 : 988,985.46 = 394,381.23 : x
  2. Step 2: Convert to fraction form
    716,671.32/988,985.46 = 394,381.23/x
  3. Step 3: Cross multiply
    716,671.32x = 988,985.46 × 394,381.23
  4. Step 4: Simplify right side
    716,671.32x = 390,037,302,166.92
  5. Step 5: Solve for x
    x = 390,037,302,166.92/716,671.32
  6. Step 6: Final answer
    x = 544,234.56

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Double scale
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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.