Home / 850,190.04-1,172,928.78-487,420.20

Finding the Fourth Proportional to 850,190.04, 1,172,928.78 and 487,420.20

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Solution

The fourth proportional to 850,190.04, 1,172,928.78 and 487,420.20 is: 672,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,190.04 : 1,172,928.78 = 487,420.20 : x
  2. Step 2: Convert to fraction form
    850,190.04/1,172,928.78 = 487,420.20/x
  3. Step 3: Cross multiply
    850,190.04x = 1,172,928.78 × 487,420.20
  4. Step 4: Simplify right side
    850,190.04x = 571,709,180,533.36
  5. Step 5: Solve for x
    x = 571,709,180,533.36/850,190.04
  6. Step 6: Final answer
    x = 672,448.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.