Home / 651,279.80-976,919.70-385,340.60

Finding the Fourth Proportional to 651,279.80, 976,919.70 and 385,340.60

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Solution

The fourth proportional to 651,279.80, 976,919.70 and 385,340.60 is: 578,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,279.80 : 976,919.70 = 385,340.60 : x
  2. Step 2: Convert to fraction form
    651,279.80/976,919.70 = 385,340.60/x
  3. Step 3: Cross multiply
    651,279.80x = 976,919.70 × 385,340.60
  4. Step 4: Simplify right side
    651,279.80x = 376,446,823,349.82
  5. Step 5: Solve for x
    x = 376,446,823,349.82/651,279.80
  6. Step 6: Final answer
    x = 578,010.90

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Similar ratio
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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.