Home / 812,642.58-1,122,000.93-506,838.42

Finding the Fourth Proportional to 812,642.58, 1,122,000.93 and 506,838.42

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Solution

The fourth proportional to 812,642.58, 1,122,000.93 and 506,838.42 is: 699,782.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,642.58 : 1,122,000.93 = 506,838.42 : x
  2. Step 2: Convert to fraction form
    812,642.58/1,122,000.93 = 506,838.42/x
  3. Step 3: Cross multiply
    812,642.58x = 1,122,000.93 × 506,838.42
  4. Step 4: Simplify right side
    812,642.58x = 568,673,178,599.73
  5. Step 5: Solve for x
    x = 568,673,178,599.73/812,642.58
  6. Step 6: Final answer
    x = 699,782.65

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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.