Home / 506,929.20-699,853.56-378,575.40

Finding the Fourth Proportional to 506,929.20, 699,853.56 and 378,575.40

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Solution

The fourth proportional to 506,929.20, 699,853.56 and 378,575.40 is: 522,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,929.20 : 699,853.56 = 378,575.40 : x
  2. Step 2: Convert to fraction form
    506,929.20/699,853.56 = 378,575.40/x
  3. Step 3: Cross multiply
    506,929.20x = 699,853.56 × 378,575.40
  4. Step 4: Simplify right side
    506,929.20x = 264,947,341,418.42
  5. Step 5: Solve for x
    x = 264,947,341,418.42/506,929.20
  6. Step 6: Final answer
    x = 522,651.57

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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.