Home / 812,678.13-1,121,429.27-463,816.82

Finding the Fourth Proportional to 812,678.13, 1,121,429.27 and 463,816.82

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Solution

The fourth proportional to 812,678.13, 1,121,429.27 and 463,816.82 is: 640,029.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,678.13 : 1,121,429.27 = 463,816.82 : x
  2. Step 2: Convert to fraction form
    812,678.13/1,121,429.27 = 463,816.82/x
  3. Step 3: Cross multiply
    812,678.13x = 1,121,429.27 × 463,816.82
  4. Step 4: Simplify right side
    812,678.13x = 520,137,757,866.32
  5. Step 5: Solve for x
    x = 520,137,757,866.32/812,678.13
  6. Step 6: Final answer
    x = 640,029.23

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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.