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Finding the Fourth Proportional to 7,886,288.40, 11,070,663.60 and 7,886,288.40

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Solution

The fourth proportional to 7,886,288.40, 11,070,663.60 and 7,886,288.40 is: 11,070,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886,288.40 : 11,070,663.60 = 7,886,288.40 : x
  2. Step 2: Convert to fraction form
    7,886,288.40/11,070,663.60 = 7,886,288.40/x
  3. Step 3: Cross multiply
    7,886,288.40x = 11,070,663.60 × 7,886,288.40
  4. Step 4: Simplify right side
    7,886,288.40x = 87,306,445,928,982.23
  5. Step 5: Solve for x
    x = 87,306,445,928,982.23/7,886,288.40
  6. Step 6: Final answer
    x = 11,070,663.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.