Home / 455,474.34-628,547.45-251,520.19

Finding the Fourth Proportional to 455,474.34, 628,547.45 and 251,520.19

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Solution

The fourth proportional to 455,474.34, 628,547.45 and 251,520.19 is: 347,093.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,474.34 : 628,547.45 = 251,520.19 : x
  2. Step 2: Convert to fraction form
    455,474.34/628,547.45 = 251,520.19/x
  3. Step 3: Cross multiply
    455,474.34x = 628,547.45 × 251,520.19
  4. Step 4: Simplify right side
    455,474.34x = 158,092,371,219.05
  5. Step 5: Solve for x
    x = 158,092,371,219.05/455,474.34
  6. Step 6: Final answer
    x = 347,093.91

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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.