Home / 649,931.92-896,603.80-420,563.34

Finding the Fourth Proportional to 649,931.92, 896,603.80 and 420,563.34

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Solution

The fourth proportional to 649,931.92, 896,603.80 and 420,563.34 is: 580,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,931.92 : 896,603.80 = 420,563.34 : x
  2. Step 2: Convert to fraction form
    649,931.92/896,603.80 = 420,563.34/x
  3. Step 3: Cross multiply
    649,931.92x = 896,603.80 × 420,563.34
  4. Step 4: Simplify right side
    649,931.92x = 377,078,688,784.69
  5. Step 5: Solve for x
    x = 377,078,688,784.69/649,931.92
  6. Step 6: Final answer
    x = 580,181.83

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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.