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Finding the Fourth Proportional to 615,243.55, 859,241.45 and 615,243.55

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Solution

The fourth proportional to 615,243.55, 859,241.45 and 615,243.55 is: 859,241.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,243.55 : 859,241.45 = 615,243.55 : x
  2. Step 2: Convert to fraction form
    615,243.55/859,241.45 = 615,243.55/x
  3. Step 3: Cross multiply
    615,243.55x = 859,241.45 × 615,243.55
  4. Step 4: Simplify right side
    615,243.55x = 528,642,760,005.15
  5. Step 5: Solve for x
    x = 528,642,760,005.15/615,243.55
  6. Step 6: Final answer
    x = 859,241.45

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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.