Home / 688,412.70-949,875.39-401,944.86

Finding the Fourth Proportional to 688,412.70, 949,875.39 and 401,944.86

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Solution

The fourth proportional to 688,412.70, 949,875.39 and 401,944.86 is: 554,605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,412.70 : 949,875.39 = 401,944.86 : x
  2. Step 2: Convert to fraction form
    688,412.70/949,875.39 = 401,944.86/x
  3. Step 3: Cross multiply
    688,412.70x = 949,875.39 × 401,944.86
  4. Step 4: Simplify right side
    688,412.70x = 381,797,530,651.00
  5. Step 5: Solve for x
    x = 381,797,530,651.00/688,412.70
  6. Step 6: Final answer
    x = 554,605.59

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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.