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Finding the Fourth Proportional to 651,528.72, 977,255.64 and 386,969.68

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Solution

The fourth proportional to 651,528.72, 977,255.64 and 386,969.68 is: 580,432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,528.72 : 977,255.64 = 386,969.68 : x
  2. Step 2: Convert to fraction form
    651,528.72/977,255.64 = 386,969.68/x
  3. Step 3: Cross multiply
    651,528.72x = 977,255.64 × 386,969.68
  4. Step 4: Simplify right side
    651,528.72x = 378,168,302,289.00
  5. Step 5: Solve for x
    x = 378,168,302,289.00/651,528.72
  6. Step 6: Final answer
    x = 580,432.28

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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.