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Finding the Fourth Proportional to 530,438.72, 732,021.23 and 326,607.26

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Solution

The fourth proportional to 530,438.72, 732,021.23 and 326,607.26 is: 450,727.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,438.72 : 732,021.23 = 326,607.26 : x
  2. Step 2: Convert to fraction form
    530,438.72/732,021.23 = 326,607.26/x
  3. Step 3: Cross multiply
    530,438.72x = 732,021.23 × 326,607.26
  4. Step 4: Simplify right side
    530,438.72x = 239,083,446,559.09
  5. Step 5: Solve for x
    x = 239,083,446,559.09/530,438.72
  6. Step 6: Final answer
    x = 450,727.74

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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.