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Finding the Fourth Proportional to 708,607.48, 978,151.34 and 519,125.88

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Solution

The fourth proportional to 708,607.48, 978,151.34 and 519,125.88 is: 716,593.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,607.48 : 978,151.34 = 519,125.88 : x
  2. Step 2: Convert to fraction form
    708,607.48/978,151.34 = 519,125.88/x
  3. Step 3: Cross multiply
    708,607.48x = 978,151.34 × 519,125.88
  4. Step 4: Simplify right side
    708,607.48x = 507,783,675,150.68
  5. Step 5: Solve for x
    x = 507,783,675,150.68/708,607.48
  6. Step 6: Final answer
    x = 716,593.73

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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.