Home / 579,635.20-869,452.80-402,488.20

Finding the Fourth Proportional to 579,635.20, 869,452.80 and 402,488.20

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Solution

The fourth proportional to 579,635.20, 869,452.80 and 402,488.20 is: 603,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,635.20 : 869,452.80 = 402,488.20 : x
  2. Step 2: Convert to fraction form
    579,635.20/869,452.80 = 402,488.20/x
  3. Step 3: Cross multiply
    579,635.20x = 869,452.80 × 402,488.20
  4. Step 4: Simplify right side
    579,635.20x = 349,944,492,456.96
  5. Step 5: Solve for x
    x = 349,944,492,456.96/579,635.20
  6. Step 6: Final answer
    x = 603,732.30

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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.