Home / 457,821.40-687,388.20-346,284.40

Finding the Fourth Proportional to 457,821.40, 687,388.20 and 346,284.40

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Solution

The fourth proportional to 457,821.40, 687,388.20 and 346,284.40 is: 519,922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,821.40 : 687,388.20 = 346,284.40 : x
  2. Step 2: Convert to fraction form
    457,821.40/687,388.20 = 346,284.40/x
  3. Step 3: Cross multiply
    457,821.40x = 687,388.20 × 346,284.40
  4. Step 4: Simplify right side
    457,821.40x = 238,031,810,404.08
  5. Step 5: Solve for x
    x = 238,031,810,404.08/457,821.40
  6. Step 6: Final answer
    x = 519,922.86

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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.