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Finding the Fourth Proportional to 519,266.10, 728,022.30 and 519,266.10

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Solution

The fourth proportional to 519,266.10, 728,022.30 and 519,266.10 is: 728,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,266.10 : 728,022.30 = 519,266.10 : x
  2. Step 2: Convert to fraction form
    519,266.10/728,022.30 = 519,266.10/x
  3. Step 3: Cross multiply
    519,266.10x = 728,022.30 × 519,266.10
  4. Step 4: Simplify right side
    519,266.10x = 378,037,300,434.03
  5. Step 5: Solve for x
    x = 378,037,300,434.03/519,266.10
  6. Step 6: Final answer
    x = 728,022.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.