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Finding the Fourth Proportional to 495,303.28, 683,541.48 and 280,414.96

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Solution

The fourth proportional to 495,303.28, 683,541.48 and 280,414.96 is: 386,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,303.28 : 683,541.48 = 280,414.96 : x
  2. Step 2: Convert to fraction form
    495,303.28/683,541.48 = 280,414.96/x
  3. Step 3: Cross multiply
    495,303.28x = 683,541.48 × 280,414.96
  4. Step 4: Simplify right side
    495,303.28x = 191,675,256,772.54
  5. Step 5: Solve for x
    x = 191,675,256,772.54/495,303.28
  6. Step 6: Final answer
    x = 386,985.64

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1.5x scale

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.