Home / 897,200.40-1,238,164.20-515,303.76

Finding the Fourth Proportional to 897,200.40, 1,238,164.20 and 515,303.76

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Solution

The fourth proportional to 897,200.40, 1,238,164.20 and 515,303.76 is: 711,135.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,200.40 : 1,238,164.20 = 515,303.76 : x
  2. Step 2: Convert to fraction form
    897,200.40/1,238,164.20 = 515,303.76/x
  3. Step 3: Cross multiply
    897,200.40x = 1,238,164.20 × 515,303.76
  4. Step 4: Simplify right side
    897,200.40x = 638,030,667,757.39
  5. Step 5: Solve for x
    x = 638,030,667,757.39/897,200.40
  6. Step 6: Final answer
    x = 711,135.07

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Double scale
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Similar ratio
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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.