Home / 780,278.25-1,170,417.38-189,302.25

Finding the Fourth Proportional to 780,278.25, 1,170,417.38 and 189,302.25

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Solution

The fourth proportional to 780,278.25, 1,170,417.38 and 189,302.25 is: 283,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,278.25 : 1,170,417.38 = 189,302.25 : x
  2. Step 2: Convert to fraction form
    780,278.25/1,170,417.38 = 189,302.25/x
  3. Step 3: Cross multiply
    780,278.25x = 1,170,417.38 × 189,302.25
  4. Step 4: Simplify right side
    780,278.25x = 221,562,642,526.59
  5. Step 5: Solve for x
    x = 221,562,642,526.59/780,278.25
  6. Step 6: Final answer
    x = 283,953.38

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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.