Home / 499,145.77-688,943.55-284,412.34

Finding the Fourth Proportional to 499,145.77, 688,943.55 and 284,412.34

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Solution

The fourth proportional to 499,145.77, 688,943.55 and 284,412.34 is: 392,558.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,145.77 : 688,943.55 = 284,412.34 : x
  2. Step 2: Convert to fraction form
    499,145.77/688,943.55 = 284,412.34/x
  3. Step 3: Cross multiply
    499,145.77x = 688,943.55 × 284,412.34
  4. Step 4: Simplify right side
    499,145.77x = 195,944,047,183.41
  5. Step 5: Solve for x
    x = 195,944,047,183.41/499,145.77
  6. Step 6: Final answer
    x = 392,558.77

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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.