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Finding the Fourth Proportional to 572,018.96, 789,384 and 313,900.24

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Solution

The fourth proportional to 572,018.96, 789,384 and 313,900.24 is: 433,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,018.96 : 789,384 = 313,900.24 : x
  2. Step 2: Convert to fraction form
    572,018.96/789,384 = 313,900.24/x
  3. Step 3: Cross multiply
    572,018.96x = 789,384 × 313,900.24
  4. Step 4: Simplify right side
    572,018.96x = 247,787,827,052.16
  5. Step 5: Solve for x
    x = 247,787,827,052.16/572,018.96
  6. Step 6: Final answer
    x = 433,181.14

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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.