Home / 495,123.85-683,287.20-280,259.32

Finding the Fourth Proportional to 495,123.85, 683,287.20 and 280,259.32

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Solution

The fourth proportional to 495,123.85, 683,287.20 and 280,259.32 is: 386,767.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,123.85 : 683,287.20 = 280,259.32 : x
  2. Step 2: Convert to fraction form
    495,123.85/683,287.20 = 280,259.32/x
  3. Step 3: Cross multiply
    495,123.85x = 683,287.20 × 280,259.32
  4. Step 4: Simplify right side
    495,123.85x = 191,497,606,036.70
  5. Step 5: Solve for x
    x = 191,497,606,036.70/495,123.85
  6. Step 6: Final answer
    x = 386,767.08

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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.