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Finding the Fourth Proportional to 990,544.40, 1,484,504.40 and 877,695.20

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Solution

The fourth proportional to 990,544.40, 1,484,504.40 and 877,695.20 is: 1,315,380.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,544.40 : 1,484,504.40 = 877,695.20 : x
  2. Step 2: Convert to fraction form
    990,544.40/1,484,504.40 = 877,695.20/x
  3. Step 3: Cross multiply
    990,544.40x = 1,484,504.40 × 877,695.20
  4. Step 4: Simplify right side
    990,544.40x = 1,302,942,386,258.88
  5. Step 5: Solve for x
    x = 1,302,942,386,258.88/990,544.40
  6. Step 6: Final answer
    x = 1,315,380.09

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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.