Home / 449,746.84-620,590.70-288,819.86

Finding the Fourth Proportional to 449,746.84, 620,590.70 and 288,819.86

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Solution

The fourth proportional to 449,746.84, 620,590.70 and 288,819.86 is: 398,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,746.84 : 620,590.70 = 288,819.86 : x
  2. Step 2: Convert to fraction form
    449,746.84/620,590.70 = 288,819.86/x
  3. Step 3: Cross multiply
    449,746.84x = 620,590.70 × 288,819.86
  4. Step 4: Simplify right side
    449,746.84x = 179,238,917,647.20
  5. Step 5: Solve for x
    x = 179,238,917,647.20/449,746.84
  6. Step 6: Final answer
    x = 398,532.92

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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.