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Finding the Fourth Proportional to 615,205.30, 859,187.90 and 615,205.30

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Solution

The fourth proportional to 615,205.30, 859,187.90 and 615,205.30 is: 859,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,205.30 : 859,187.90 = 615,205.30 : x
  2. Step 2: Convert to fraction form
    615,205.30/859,187.90 = 615,205.30/x
  3. Step 3: Cross multiply
    615,205.30x = 859,187.90 × 615,205.30
  4. Step 4: Simplify right side
    615,205.30x = 528,576,949,775.87
  5. Step 5: Solve for x
    x = 528,576,949,775.87/615,205.30
  6. Step 6: Final answer
    x = 859,187.90

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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.