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Finding the Fourth Proportional to 651,688.80, 977,662.80 and 547,231.20

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Solution

The fourth proportional to 651,688.80, 977,662.80 and 547,231.20 is: 820,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,688.80 : 977,662.80 = 547,231.20 : x
  2. Step 2: Convert to fraction form
    651,688.80/977,662.80 = 547,231.20/x
  3. Step 3: Cross multiply
    651,688.80x = 977,662.80 × 547,231.20
  4. Step 4: Simplify right side
    651,688.80x = 535,007,587,239.36
  5. Step 5: Solve for x
    x = 535,007,587,239.36/651,688.80
  6. Step 6: Final answer
    x = 820,955.63

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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.