Home / 9,121,396.65-12,587,528.36-4,991,428.67

Finding the Fourth Proportional to 9,121,396.65, 12,587,528.36 and 4,991,428.67

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Solution

The fourth proportional to 9,121,396.65, 12,587,528.36 and 4,991,428.67 is: 6,888,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,396.65 : 12,587,528.36 = 4,991,428.67 : x
  2. Step 2: Convert to fraction form
    9,121,396.65/12,587,528.36 = 4,991,428.67/x
  3. Step 3: Cross multiply
    9,121,396.65x = 12,587,528.36 × 4,991,428.67
  4. Step 4: Simplify right side
    9,121,396.65x = 62,829,749,940,542.08
  5. Step 5: Solve for x
    x = 62,829,749,940,542.08/9,121,396.65
  6. Step 6: Final answer
    x = 6,888,172.10

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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.