Home / 645,924.45-891,362.55-404,340.24

Finding the Fourth Proportional to 645,924.45, 891,362.55 and 404,340.24

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Solution

The fourth proportional to 645,924.45, 891,362.55 and 404,340.24 is: 557,981.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,924.45 : 891,362.55 = 404,340.24 : x
  2. Step 2: Convert to fraction form
    645,924.45/891,362.55 = 404,340.24/x
  3. Step 3: Cross multiply
    645,924.45x = 891,362.55 × 404,340.24
  4. Step 4: Simplify right side
    645,924.45x = 360,413,747,394.01
  5. Step 5: Solve for x
    x = 360,413,747,394.01/645,924.45
  6. Step 6: Final answer
    x = 557,981.27

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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.