Home / 990,044.88-1,485,054.78-316,117.64

Finding the Fourth Proportional to 990,044.88, 1,485,054.78 and 316,117.64

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Solution

The fourth proportional to 990,044.88, 1,485,054.78 and 316,117.64 is: 474,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,044.88 : 1,485,054.78 = 316,117.64 : x
  2. Step 2: Convert to fraction form
    990,044.88/1,485,054.78 = 316,117.64/x
  3. Step 3: Cross multiply
    990,044.88x = 1,485,054.78 × 316,117.64
  4. Step 4: Simplify right side
    990,044.88x = 469,452,009,165.32
  5. Step 5: Solve for x
    x = 469,452,009,165.32/990,044.88
  6. Step 6: Final answer
    x = 474,172.45

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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.