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Finding the Fourth Proportional to 530,428.21, 732,006.80 and 326,596.75

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Solution

The fourth proportional to 530,428.21, 732,006.80 and 326,596.75 is: 450,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,428.21 : 732,006.80 = 326,596.75 : x
  2. Step 2: Convert to fraction form
    530,428.21/732,006.80 = 326,596.75/x
  3. Step 3: Cross multiply
    530,428.21x = 732,006.80 × 326,596.75
  4. Step 4: Simplify right side
    530,428.21x = 239,071,041,857.90
  5. Step 5: Solve for x
    x = 239,071,041,857.90/530,428.21
  6. Step 6: Final answer
    x = 450,713.29

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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.