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Finding the Fourth Proportional to 495,377.93, 683,621.54 and 280,559.51

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Solution

The fourth proportional to 495,377.93, 683,621.54 and 280,559.51 is: 387,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,377.93 : 683,621.54 = 280,559.51 : x
  2. Step 2: Convert to fraction form
    495,377.93/683,621.54 = 280,559.51/x
  3. Step 3: Cross multiply
    495,377.93x = 683,621.54 × 280,559.51
  4. Step 4: Simplify right side
    495,377.93x = 191,796,522,444.63
  5. Step 5: Solve for x
    x = 191,796,522,444.63/495,377.93
  6. Step 6: Final answer
    x = 387,172.12

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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.