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Finding the Fourth Proportional to 7,800,999.40, 11,685,752.70 and 7,800,999.40

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Solution

The fourth proportional to 7,800,999.40, 11,685,752.70 and 7,800,999.40 is: 11,685,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800,999.40 : 11,685,752.70 = 7,800,999.40 : x
  2. Step 2: Convert to fraction form
    7,800,999.40/11,685,752.70 = 7,800,999.40/x
  3. Step 3: Cross multiply
    7,800,999.40x = 11,685,752.70 × 7,800,999.40
  4. Step 4: Simplify right side
    7,800,999.40x = 91,160,549,801,248.38
  5. Step 5: Solve for x
    x = 91,160,549,801,248.38/7,800,999.40
  6. Step 6: Final answer
    x = 11,685,752.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.