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Finding the Fourth Proportional to 566,650.36, 781,975.72 and 312,001.60

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Solution

The fourth proportional to 566,650.36, 781,975.72 and 312,001.60 is: 430,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,650.36 : 781,975.72 = 312,001.60 : x
  2. Step 2: Convert to fraction form
    566,650.36/781,975.72 = 312,001.60/x
  3. Step 3: Cross multiply
    566,650.36x = 781,975.72 × 312,001.60
  4. Step 4: Simplify right side
    566,650.36x = 243,977,675,801.15
  5. Step 5: Solve for x
    x = 243,977,675,801.15/566,650.36
  6. Step 6: Final answer
    x = 430,561.23

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.