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Finding the Fourth Proportional to 568,459.86, 784,476.31 and 310,337.21

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Solution

The fourth proportional to 568,459.86, 784,476.31 and 310,337.21 is: 428,266.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,459.86 : 784,476.31 = 310,337.21 : x
  2. Step 2: Convert to fraction form
    568,459.86/784,476.31 = 310,337.21/x
  3. Step 3: Cross multiply
    568,459.86x = 784,476.31 × 310,337.21
  4. Step 4: Simplify right side
    568,459.86x = 243,452,189,356.50
  5. Step 5: Solve for x
    x = 243,452,189,356.50/568,459.86
  6. Step 6: Final answer
    x = 428,266.28

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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.