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Finding the Fourth Proportional to 605,979.60, 908,969.40 and 578,423.40

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Solution

The fourth proportional to 605,979.60, 908,969.40 and 578,423.40 is: 867,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,979.60 : 908,969.40 = 578,423.40 : x
  2. Step 2: Convert to fraction form
    605,979.60/908,969.40 = 578,423.40/x
  3. Step 3: Cross multiply
    605,979.60x = 908,969.40 × 578,423.40
  4. Step 4: Simplify right side
    605,979.60x = 525,769,170,843.96
  5. Step 5: Solve for x
    x = 525,769,170,843.96/605,979.60
  6. Step 6: Final answer
    x = 867,635.10

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1.5x scale

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.