Home / 688,631.54-950,288.78-378,535.16

Finding the Fourth Proportional to 688,631.54, 950,288.78 and 378,535.16

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Solution

The fourth proportional to 688,631.54, 950,288.78 and 378,535.16 is: 522,366.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,631.54 : 950,288.78 = 378,535.16 : x
  2. Step 2: Convert to fraction form
    688,631.54/950,288.78 = 378,535.16/x
  3. Step 3: Cross multiply
    688,631.54x = 950,288.78 × 378,535.16
  4. Step 4: Simplify right side
    688,631.54x = 359,717,708,739.39
  5. Step 5: Solve for x
    x = 359,717,708,739.39/688,631.54
  6. Step 6: Final answer
    x = 522,366.01

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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.