Home / 1,178,688.80-1,768,033.20-390,720.80

Finding the Fourth Proportional to 1,178,688.80, 1,768,033.20 and 390,720.80

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Solution

The fourth proportional to 1,178,688.80, 1,768,033.20 and 390,720.80 is: 586,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,688.80 : 1,768,033.20 = 390,720.80 : x
  2. Step 2: Convert to fraction form
    1,178,688.80/1,768,033.20 = 390,720.80/x
  3. Step 3: Cross multiply
    1,178,688.80x = 1,768,033.20 × 390,720.80
  4. Step 4: Simplify right side
    1,178,688.80x = 690,807,346,330.56
  5. Step 5: Solve for x
    x = 690,807,346,330.56/1,178,688.80
  6. Step 6: Final answer
    x = 586,081.20

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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.