Home / 878,762.60-1,318,143.90-317,815.40

Finding the Fourth Proportional to 878,762.60, 1,318,143.90 and 317,815.40

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Solution

The fourth proportional to 878,762.60, 1,318,143.90 and 317,815.40 is: 476,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,762.60 : 1,318,143.90 = 317,815.40 : x
  2. Step 2: Convert to fraction form
    878,762.60/1,318,143.90 = 317,815.40/x
  3. Step 3: Cross multiply
    878,762.60x = 1,318,143.90 × 317,815.40
  4. Step 4: Simplify right side
    878,762.60x = 418,926,430,836.06
  5. Step 5: Solve for x
    x = 418,926,430,836.06/878,762.60
  6. Step 6: Final answer
    x = 476,723.10

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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.