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Finding the Fourth Proportional to 495,567.86, 683,861.74 and 280,703.61

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Solution

The fourth proportional to 495,567.86, 683,861.74 and 280,703.61 is: 387,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,567.86 : 683,861.74 = 280,703.61 : x
  2. Step 2: Convert to fraction form
    495,567.86/683,861.74 = 280,703.61/x
  3. Step 3: Cross multiply
    495,567.86x = 683,861.74 × 280,703.61
  4. Step 4: Simplify right side
    495,567.86x = 191,962,458,457.12
  5. Step 5: Solve for x
    x = 191,962,458,457.12/495,567.86
  6. Step 6: Final answer
    x = 387,358.58

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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.