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Finding the Fourth Proportional to 817,889.88, 1,129,632.72 and 545,484.48

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Solution

The fourth proportional to 817,889.88, 1,129,632.72 and 545,484.48 is: 753,398.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,889.88 : 1,129,632.72 = 545,484.48 : x
  2. Step 2: Convert to fraction form
    817,889.88/1,129,632.72 = 545,484.48/x
  3. Step 3: Cross multiply
    817,889.88x = 1,129,632.72 × 545,484.48
  4. Step 4: Simplify right side
    817,889.88x = 616,197,116,860.19
  5. Step 5: Solve for x
    x = 616,197,116,860.19/817,889.88
  6. Step 6: Final answer
    x = 753,398.63

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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.