Home / 900,880.12-1,243,214.68-492,982.05

Finding the Fourth Proportional to 900,880.12, 1,243,214.68 and 492,982.05

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Solution

The fourth proportional to 900,880.12, 1,243,214.68 and 492,982.05 is: 680,315.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,880.12 : 1,243,214.68 = 492,982.05 : x
  2. Step 2: Convert to fraction form
    900,880.12/1,243,214.68 = 492,982.05/x
  3. Step 3: Cross multiply
    900,880.12x = 1,243,214.68 × 492,982.05
  4. Step 4: Simplify right side
    900,880.12x = 612,882,517,490.67
  5. Step 5: Solve for x
    x = 612,882,517,490.67/900,880.12
  6. Step 6: Final answer
    x = 680,315.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.