Home / 651,140.80-976,711.20-336,212.80

Finding the Fourth Proportional to 651,140.80, 976,711.20 and 336,212.80

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Solution

The fourth proportional to 651,140.80, 976,711.20 and 336,212.80 is: 504,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,140.80 : 976,711.20 = 336,212.80 : x
  2. Step 2: Convert to fraction form
    651,140.80/976,711.20 = 336,212.80/x
  3. Step 3: Cross multiply
    651,140.80x = 976,711.20 × 336,212.80
  4. Step 4: Simplify right side
    651,140.80x = 328,382,807,343.36
  5. Step 5: Solve for x
    x = 328,382,807,343.36/651,140.80
  6. Step 6: Final answer
    x = 504,319.20

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Double scale
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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.