Home / 448,412.46-672,416.27-128,491.15

Finding the Fourth Proportional to 448,412.46, 672,416.27 and 128,491.15

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Solution

The fourth proportional to 448,412.46, 672,416.27 and 128,491.15 is: 192,678.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,412.46 : 672,416.27 = 128,491.15 : x
  2. Step 2: Convert to fraction form
    448,412.46/672,416.27 = 128,491.15/x
  3. Step 3: Cross multiply
    448,412.46x = 672,416.27 × 128,491.15
  4. Step 4: Simplify right side
    448,412.46x = 86,399,538,826.62
  5. Step 5: Solve for x
    x = 86,399,538,826.62/448,412.46
  6. Step 6: Final answer
    x = 192,678.72

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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.