Home / 495,328.70-683,561.55-280,463.02

Finding the Fourth Proportional to 495,328.70, 683,561.55 and 280,463.02

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Solution

The fourth proportional to 495,328.70, 683,561.55 and 280,463.02 is: 387,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,328.70 : 683,561.55 = 280,463.02 : x
  2. Step 2: Convert to fraction form
    495,328.70/683,561.55 = 280,463.02/x
  3. Step 3: Cross multiply
    495,328.70x = 683,561.55 × 280,463.02
  4. Step 4: Simplify right side
    495,328.70x = 191,713,736,668.88
  5. Step 5: Solve for x
    x = 191,713,736,668.88/495,328.70
  6. Step 6: Final answer
    x = 387,043.47

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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.