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Finding the Fourth Proportional to 577,139.61, 796,438.75 and 315,483.28

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Solution

The fourth proportional to 577,139.61, 796,438.75 and 315,483.28 is: 435,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,139.61 : 796,438.75 = 315,483.28 : x
  2. Step 2: Convert to fraction form
    577,139.61/796,438.75 = 315,483.28/x
  3. Step 3: Cross multiply
    577,139.61x = 796,438.75 × 315,483.28
  4. Step 4: Simplify right side
    577,139.61x = 251,263,109,169.10
  5. Step 5: Solve for x
    x = 251,263,109,169.10/577,139.61
  6. Step 6: Final answer
    x = 435,359.32

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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.