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Finding the Fourth Proportional to 605,688.60, 908,532.90 and 578,132.40

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Solution

The fourth proportional to 605,688.60, 908,532.90 and 578,132.40 is: 867,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,688.60 : 908,532.90 = 578,132.40 : x
  2. Step 2: Convert to fraction form
    605,688.60/908,532.90 = 578,132.40/x
  3. Step 3: Cross multiply
    605,688.60x = 908,532.90 × 578,132.40
  4. Step 4: Simplify right side
    605,688.60x = 525,252,305,955.96
  5. Step 5: Solve for x
    x = 525,252,305,955.96/605,688.60
  6. Step 6: Final answer
    x = 867,198.60

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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.