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Finding the Fourth Proportional to 459,313.46, 688,983.15 and 126,889.46

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Solution

The fourth proportional to 459,313.46, 688,983.15 and 126,889.46 is: 190,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,313.46 : 688,983.15 = 126,889.46 : x
  2. Step 2: Convert to fraction form
    459,313.46/688,983.15 = 126,889.46/x
  3. Step 3: Cross multiply
    459,313.46x = 688,983.15 × 126,889.46
  4. Step 4: Simplify right side
    459,313.46x = 87,424,699,852.60
  5. Step 5: Solve for x
    x = 87,424,699,852.60/459,313.46
  6. Step 6: Final answer
    x = 190,337.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.