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Finding the Fourth Proportional to 555,192.78, 767,457.27 and 495,356.46

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Solution

The fourth proportional to 555,192.78, 767,457.27 and 495,356.46 is: 684,743.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,192.78 : 767,457.27 = 495,356.46 : x
  2. Step 2: Convert to fraction form
    555,192.78/767,457.27 = 495,356.46/x
  3. Step 3: Cross multiply
    555,192.78x = 767,457.27 × 495,356.46
  4. Step 4: Simplify right side
    555,192.78x = 380,164,916,468.46
  5. Step 5: Solve for x
    x = 380,164,916,468.46/555,192.78
  6. Step 6: Final answer
    x = 684,743.98

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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.