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Finding the Fourth Proportional to 495,656.66, 684,040.01 and 280,798.49

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Solution

The fourth proportional to 495,656.66, 684,040.01 and 280,798.49 is: 387,521.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,656.66 : 684,040.01 = 280,798.49 : x
  2. Step 2: Convert to fraction form
    495,656.66/684,040.01 = 280,798.49/x
  3. Step 3: Cross multiply
    495,656.66x = 684,040.01 × 280,798.49
  4. Step 4: Simplify right side
    495,656.66x = 192,077,398,487.39
  5. Step 5: Solve for x
    x = 192,077,398,487.39/495,656.66
  6. Step 6: Final answer
    x = 387,521.07

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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.