Home / 746,039.48-1,119,390.06-390,969.20

Finding the Fourth Proportional to 746,039.48, 1,119,390.06 and 390,969.20

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Solution

The fourth proportional to 746,039.48, 1,119,390.06 and 390,969.20 is: 586,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,039.48 : 1,119,390.06 = 390,969.20 : x
  2. Step 2: Convert to fraction form
    746,039.48/1,119,390.06 = 390,969.20/x
  3. Step 3: Cross multiply
    746,039.48x = 1,119,390.06 × 390,969.20
  4. Step 4: Simplify right side
    746,039.48x = 437,647,036,246.15
  5. Step 5: Solve for x
    x = 437,647,036,246.15/746,039.48
  6. Step 6: Final answer
    x = 586,627.18

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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.