Home / 897,207.40-1,238,173.86-515,310.76

Finding the Fourth Proportional to 897,207.40, 1,238,173.86 and 515,310.76

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Solution

The fourth proportional to 897,207.40, 1,238,173.86 and 515,310.76 is: 711,144.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,207.40 : 1,238,173.86 = 515,310.76 : x
  2. Step 2: Convert to fraction form
    897,207.40/1,238,173.86 = 515,310.76/x
  3. Step 3: Cross multiply
    897,207.40x = 1,238,173.86 × 515,310.76
  4. Step 4: Simplify right side
    897,207.40x = 638,044,312,808.73
  5. Step 5: Solve for x
    x = 638,044,312,808.73/897,207.40
  6. Step 6: Final answer
    x = 711,144.73

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Double scale
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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.