Home / 448,053.60-672,080.40-289,423.20

Finding the Fourth Proportional to 448,053.60, 672,080.40 and 289,423.20

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Solution

The fourth proportional to 448,053.60, 672,080.40 and 289,423.20 is: 434,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,053.60 : 672,080.40 = 289,423.20 : x
  2. Step 2: Convert to fraction form
    448,053.60/672,080.40 = 289,423.20/x
  3. Step 3: Cross multiply
    448,053.60x = 672,080.40 × 289,423.20
  4. Step 4: Simplify right side
    448,053.60x = 194,515,660,025.28
  5. Step 5: Solve for x
    x = 194,515,660,025.28/448,053.60
  6. Step 6: Final answer
    x = 434,134.80

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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.