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Finding the Fourth Proportional to 530,438.78, 732,021.32 and 326,607.32

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Solution

The fourth proportional to 530,438.78, 732,021.32 and 326,607.32 is: 450,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,438.78 : 732,021.32 = 326,607.32 : x
  2. Step 2: Convert to fraction form
    530,438.78/732,021.32 = 326,607.32/x
  3. Step 3: Cross multiply
    530,438.78x = 732,021.32 × 326,607.32
  4. Step 4: Simplify right side
    530,438.78x = 239,083,524,154.63
  5. Step 5: Solve for x
    x = 239,083,524,154.63/530,438.78
  6. Step 6: Final answer
    x = 450,727.84

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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.