Home / 912,899.36-1,369,316.24-281,813.18

Finding the Fourth Proportional to 912,899.36, 1,369,316.24 and 281,813.18

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Solution

The fourth proportional to 912,899.36, 1,369,316.24 and 281,813.18 is: 422,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,899.36 : 1,369,316.24 = 281,813.18 : x
  2. Step 2: Convert to fraction form
    912,899.36/1,369,316.24 = 281,813.18/x
  3. Step 3: Cross multiply
    912,899.36x = 1,369,316.24 × 281,813.18
  4. Step 4: Simplify right side
    912,899.36x = 385,891,356,821.20
  5. Step 5: Solve for x
    x = 385,891,356,821.20/912,899.36
  6. Step 6: Final answer
    x = 422,709.64

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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.