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Finding the Fourth Proportional to 530,431.80, 732,136.65 and 326,653.56

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Solution

The fourth proportional to 530,431.80, 732,136.65 and 326,653.56 is: 450,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,431.80 : 732,136.65 = 326,653.56 : x
  2. Step 2: Convert to fraction form
    530,431.80/732,136.65 = 326,653.56/x
  3. Step 3: Cross multiply
    530,431.80x = 732,136.65 × 326,653.56
  4. Step 4: Simplify right side
    530,431.80x = 239,155,043,128.97
  5. Step 5: Solve for x
    x = 239,155,043,128.97/530,431.80
  6. Step 6: Final answer
    x = 450,868.60

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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.