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Finding the Fourth Proportional to 530,143.56, 732,039.54 and 491,679.09

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Solution

The fourth proportional to 530,143.56, 732,039.54 and 491,679.09 is: 678,926.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,143.56 : 732,039.54 = 491,679.09 : x
  2. Step 2: Convert to fraction form
    530,143.56/732,039.54 = 491,679.09/x
  3. Step 3: Cross multiply
    530,143.56x = 732,039.54 × 491,679.09
  4. Step 4: Simplify right side
    530,143.56x = 359,928,534,871.22
  5. Step 5: Solve for x
    x = 359,928,534,871.22/530,143.56
  6. Step 6: Final answer
    x = 678,926.54

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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.