Home / 495,439.86-683,684.12-280,581.47

Finding the Fourth Proportional to 495,439.86, 683,684.12 and 280,581.47

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Solution

The fourth proportional to 495,439.86, 683,684.12 and 280,581.47 is: 387,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,439.86 : 683,684.12 = 280,581.47 : x
  2. Step 2: Convert to fraction form
    495,439.86/683,684.12 = 280,581.47/x
  3. Step 3: Cross multiply
    495,439.86x = 683,684.12 × 280,581.47
  4. Step 4: Simplify right side
    495,439.86x = 191,829,090,583.93
  5. Step 5: Solve for x
    x = 191,829,090,583.93/495,439.86
  6. Step 6: Final answer
    x = 387,189.46

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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.