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Finding the Fourth Proportional to 615,884.76, 924,119.55 and 426,636.36

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Solution

The fourth proportional to 615,884.76, 924,119.55 and 426,636.36 is: 640,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,884.76 : 924,119.55 = 426,636.36 : x
  2. Step 2: Convert to fraction form
    615,884.76/924,119.55 = 426,636.36/x
  3. Step 3: Cross multiply
    615,884.76x = 924,119.55 × 426,636.36
  4. Step 4: Simplify right side
    615,884.76x = 394,263,001,016.84
  5. Step 5: Solve for x
    x = 394,263,001,016.84/615,884.76
  6. Step 6: Final answer
    x = 640,157.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.