Home / 779,969.70-1,169,954.55-218,931.30

Finding the Fourth Proportional to 779,969.70, 1,169,954.55 and 218,931.30

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Solution

The fourth proportional to 779,969.70, 1,169,954.55 and 218,931.30 is: 328,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,969.70 : 1,169,954.55 = 218,931.30 : x
  2. Step 2: Convert to fraction form
    779,969.70/1,169,954.55 = 218,931.30/x
  3. Step 3: Cross multiply
    779,969.70x = 1,169,954.55 × 218,931.30
  4. Step 4: Simplify right side
    779,969.70x = 256,139,670,572.42
  5. Step 5: Solve for x
    x = 256,139,670,572.42/779,969.70
  6. Step 6: Final answer
    x = 328,396.95

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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.