Home / 780,990.19-1,171,036.95-307,417.21

Finding the Fourth Proportional to 780,990.19, 1,171,036.95 and 307,417.21

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Solution

The fourth proportional to 780,990.19, 1,171,036.95 and 307,417.21 is: 460,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,990.19 : 1,171,036.95 = 307,417.21 : x
  2. Step 2: Convert to fraction form
    780,990.19/1,171,036.95 = 307,417.21/x
  3. Step 3: Cross multiply
    780,990.19x = 1,171,036.95 × 307,417.21
  4. Step 4: Simplify right side
    780,990.19x = 359,996,907,895.50
  5. Step 5: Solve for x
    x = 359,996,907,895.50/780,990.19
  6. Step 6: Final answer
    x = 460,949.34

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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.