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Finding the Fourth Proportional to 640,431.10, 960,645.36 and 601,458.76

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Solution

The fourth proportional to 640,431.10, 960,645.36 and 601,458.76 is: 902,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,431.10 : 960,645.36 = 601,458.76 : x
  2. Step 2: Convert to fraction form
    640,431.10/960,645.36 = 601,458.76/x
  3. Step 3: Cross multiply
    640,431.10x = 960,645.36 × 601,458.76
  4. Step 4: Simplify right side
    640,431.10x = 577,788,567,025.35
  5. Step 5: Solve for x
    x = 577,788,567,025.35/640,431.10
  6. Step 6: Final answer
    x = 902,186.93

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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.