Home / 487,336.68-672,320.82-379,719.84

Finding the Fourth Proportional to 487,336.68, 672,320.82 and 379,719.84

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Solution

The fourth proportional to 487,336.68, 672,320.82 and 379,719.84 is: 523,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,336.68 : 672,320.82 = 379,719.84 : x
  2. Step 2: Convert to fraction form
    487,336.68/672,320.82 = 379,719.84/x
  3. Step 3: Cross multiply
    487,336.68x = 672,320.82 × 379,719.84
  4. Step 4: Simplify right side
    487,336.68x = 255,293,554,199.07
  5. Step 5: Solve for x
    x = 255,293,554,199.07/487,336.68
  6. Step 6: Final answer
    x = 523,854.58

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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.