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Finding the Fourth Proportional to 615,266.80, 859,274 and 615,266.80

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Solution

The fourth proportional to 615,266.80, 859,274 and 615,266.80 is: 859,274

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,266.80 : 859,274 = 615,266.80 : x
  2. Step 2: Convert to fraction form
    615,266.80/859,274 = 615,266.80/x
  3. Step 3: Cross multiply
    615,266.80x = 859,274 × 615,266.80
  4. Step 4: Simplify right side
    615,266.80x = 528,682,764,303.20
  5. Step 5: Solve for x
    x = 528,682,764,303.20/615,266.80
  6. Step 6: Final answer
    x = 859,274

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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.