Home / 878,936.40-1,318,404.60-505,688.40

Finding the Fourth Proportional to 878,936.40, 1,318,404.60 and 505,688.40

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Solution

The fourth proportional to 878,936.40, 1,318,404.60 and 505,688.40 is: 758,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,936.40 : 1,318,404.60 = 505,688.40 : x
  2. Step 2: Convert to fraction form
    878,936.40/1,318,404.60 = 505,688.40/x
  3. Step 3: Cross multiply
    878,936.40x = 1,318,404.60 × 505,688.40
  4. Step 4: Simplify right side
    878,936.40x = 666,701,912,726.64
  5. Step 5: Solve for x
    x = 666,701,912,726.64/878,936.40
  6. Step 6: Final answer
    x = 758,532.60

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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.