Home / 495,130.56-683,088.84-280,221.36

Finding the Fourth Proportional to 495,130.56, 683,088.84 and 280,221.36

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Solution

The fourth proportional to 495,130.56, 683,088.84 and 280,221.36 is: 386,597.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,130.56 : 683,088.84 = 280,221.36 : x
  2. Step 2: Convert to fraction form
    495,130.56/683,088.84 = 280,221.36/x
  3. Step 3: Cross multiply
    495,130.56x = 683,088.84 × 280,221.36
  4. Step 4: Simplify right side
    495,130.56x = 191,416,083,745.62
  5. Step 5: Solve for x
    x = 191,416,083,745.62/495,130.56
  6. Step 6: Final answer
    x = 386,597.19

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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.