Home / 566,071.88-781,179.19-311,417.60

Finding the Fourth Proportional to 566,071.88, 781,179.19 and 311,417.60

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Solution

The fourth proportional to 566,071.88, 781,179.19 and 311,417.60 is: 429,756.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,071.88 : 781,179.19 = 311,417.60 : x
  2. Step 2: Convert to fraction form
    566,071.88/781,179.19 = 311,417.60/x
  3. Step 3: Cross multiply
    566,071.88x = 781,179.19 × 311,417.60
  4. Step 4: Simplify right side
    566,071.88x = 243,272,943,835.30
  5. Step 5: Solve for x
    x = 243,272,943,835.30/566,071.88
  6. Step 6: Final answer
    x = 429,756.28

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Half scale
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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.