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Finding the Fourth Proportional to 615,204.80, 859,187.20 and 615,204.80

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Solution

The fourth proportional to 615,204.80, 859,187.20 and 615,204.80 is: 859,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,204.80 : 859,187.20 = 615,204.80 : x
  2. Step 2: Convert to fraction form
    615,204.80/859,187.20 = 615,204.80/x
  3. Step 3: Cross multiply
    615,204.80x = 859,187.20 × 615,204.80
  4. Step 4: Simplify right side
    615,204.80x = 528,576,089,538.56
  5. Step 5: Solve for x
    x = 528,576,089,538.56/615,204.80
  6. Step 6: Final answer
    x = 859,187.20

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Double scale
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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.