Home / 428,471.34-590,983.39-283,108.74

Finding the Fourth Proportional to 428,471.34, 590,983.39 and 283,108.74

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Solution

The fourth proportional to 428,471.34, 590,983.39 and 283,108.74 is: 390,487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,471.34 : 590,983.39 = 283,108.74 : x
  2. Step 2: Convert to fraction form
    428,471.34/590,983.39 = 283,108.74/x
  3. Step 3: Cross multiply
    428,471.34x = 590,983.39 × 283,108.74
  4. Step 4: Simplify right side
    428,471.34x = 167,312,558,533.37
  5. Step 5: Solve for x
    x = 167,312,558,533.37/428,471.34
  6. Step 6: Final answer
    x = 390,487.17

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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.