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Finding the Fourth Proportional to 819,798.20, 1,131,128.88 and 497,501

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Solution

The fourth proportional to 819,798.20, 1,131,128.88 and 497,501 is: 686,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,798.20 : 1,131,128.88 = 497,501 : x
  2. Step 2: Convert to fraction form
    819,798.20/1,131,128.88 = 497,501/x
  3. Step 3: Cross multiply
    819,798.20x = 1,131,128.88 × 497,501
  4. Step 4: Simplify right side
    819,798.20x = 562,737,748,928.88
  5. Step 5: Solve for x
    x = 562,737,748,928.88/819,798.20
  6. Step 6: Final answer
    x = 686,434.48

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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.