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Finding the Fourth Proportional to 7,661,401.71, 10,572,815.84 and 4,223,765.76

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Solution

The fourth proportional to 7,661,401.71, 10,572,815.84 and 4,223,765.76 is: 5,828,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661,401.71 : 10,572,815.84 = 4,223,765.76 : x
  2. Step 2: Convert to fraction form
    7,661,401.71/10,572,815.84 = 4,223,765.76/x
  3. Step 3: Cross multiply
    7,661,401.71x = 10,572,815.84 × 4,223,765.76
  4. Step 4: Simplify right side
    7,661,401.71x = 44,657,097,510,658.81
  5. Step 5: Solve for x
    x = 44,657,097,510,658.81/7,661,401.71
  6. Step 6: Final answer
    x = 5,828,841.67

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Double scale
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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.