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Finding the Fourth Proportional to 615,077.20, 922,615.80 and 608,856.40

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Solution

The fourth proportional to 615,077.20, 922,615.80 and 608,856.40 is: 913,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,077.20 : 922,615.80 = 608,856.40 : x
  2. Step 2: Convert to fraction form
    615,077.20/922,615.80 = 608,856.40/x
  3. Step 3: Cross multiply
    615,077.20x = 922,615.80 × 608,856.40
  4. Step 4: Simplify right side
    615,077.20x = 561,740,534,571.12
  5. Step 5: Solve for x
    x = 561,740,534,571.12/615,077.20
  6. Step 6: Final answer
    x = 913,284.60

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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.