Home / 760,378.20-1,049,212.08-420,845.64

Finding the Fourth Proportional to 760,378.20, 1,049,212.08 and 420,845.64

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Solution

The fourth proportional to 760,378.20, 1,049,212.08 and 420,845.64 is: 580,706.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,378.20 : 1,049,212.08 = 420,845.64 : x
  2. Step 2: Convert to fraction form
    760,378.20/1,049,212.08 = 420,845.64/x
  3. Step 3: Cross multiply
    760,378.20x = 1,049,212.08 × 420,845.64
  4. Step 4: Simplify right side
    760,378.20x = 441,556,329,303.33
  5. Step 5: Solve for x
    x = 441,556,329,303.33/760,378.20
  6. Step 6: Final answer
    x = 580,706.19

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Double scale
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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.