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Finding the Fourth Proportional to 545,005.20, 763,794.60 and 545,005.20

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Solution

The fourth proportional to 545,005.20, 763,794.60 and 545,005.20 is: 763,794.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,005.20 : 763,794.60 = 545,005.20 : x
  2. Step 2: Convert to fraction form
    545,005.20/763,794.60 = 545,005.20/x
  3. Step 3: Cross multiply
    545,005.20x = 763,794.60 × 545,005.20
  4. Step 4: Simplify right side
    545,005.20x = 416,272,028,731.92
  5. Step 5: Solve for x
    x = 416,272,028,731.92/545,005.20
  6. Step 6: Final answer
    x = 763,794.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.