Home / 649,929.92-896,601.05-420,561.34

Finding the Fourth Proportional to 649,929.92, 896,601.05 and 420,561.34

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Solution

The fourth proportional to 649,929.92, 896,601.05 and 420,561.34 is: 580,179.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,929.92 : 896,601.05 = 420,561.34 : x
  2. Step 2: Convert to fraction form
    649,929.92/896,601.05 = 420,561.34/x
  3. Step 3: Cross multiply
    649,929.92x = 896,601.05 × 420,561.34
  4. Step 4: Simplify right side
    649,929.92x = 377,075,734,689.10
  5. Step 5: Solve for x
    x = 377,075,734,689.10/649,929.92
  6. Step 6: Final answer
    x = 580,179.06

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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.