Home / 7,209,621.87-9,949,281.29-3,946,455.21

Finding the Fourth Proportional to 7,209,621.87, 9,949,281.29 and 3,946,455.21

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Solution

The fourth proportional to 7,209,621.87, 9,949,281.29 and 3,946,455.21 is: 5,446,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209,621.87 : 9,949,281.29 = 3,946,455.21 : x
  2. Step 2: Convert to fraction form
    7,209,621.87/9,949,281.29 = 3,946,455.21/x
  3. Step 3: Cross multiply
    7,209,621.87x = 9,949,281.29 × 3,946,455.21
  4. Step 4: Simplify right side
    7,209,621.87x = 39,264,392,913,197.34
  5. Step 5: Solve for x
    x = 39,264,392,913,197.34/7,209,621.87
  6. Step 6: Final answer
    x = 5,446,109.89

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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.