Home / 448,284.54-672,423.45-128,436.68

Finding the Fourth Proportional to 448,284.54, 672,423.45 and 128,436.68

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Solution

The fourth proportional to 448,284.54, 672,423.45 and 128,436.68 is: 192,654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,284.54 : 672,423.45 = 128,436.68 : x
  2. Step 2: Convert to fraction form
    448,284.54/672,423.45 = 128,436.68/x
  3. Step 3: Cross multiply
    448,284.54x = 672,423.45 × 128,436.68
  4. Step 4: Simplify right side
    448,284.54x = 86,363,831,467.85
  5. Step 5: Solve for x
    x = 86,363,831,467.85/448,284.54
  6. Step 6: Final answer
    x = 192,654.05

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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.