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Finding the Fourth Proportional to 495,606.49, 683,950.95 and 280,746.49

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Solution

The fourth proportional to 495,606.49, 683,950.95 and 280,746.49 is: 387,438.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,606.49 : 683,950.95 = 280,746.49 : x
  2. Step 2: Convert to fraction form
    495,606.49/683,950.95 = 280,746.49/x
  3. Step 3: Cross multiply
    495,606.49x = 683,950.95 × 280,746.49
  4. Step 4: Simplify right side
    495,606.49x = 192,016,828,544.67
  5. Step 5: Solve for x
    x = 192,016,828,544.67/495,606.49
  6. Step 6: Final answer
    x = 387,438.08

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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.