Home / 990,045.88-1,485,056.28-316,118.64

Finding the Fourth Proportional to 990,045.88, 1,485,056.28 and 316,118.64

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Solution

The fourth proportional to 990,045.88, 1,485,056.28 and 316,118.64 is: 474,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,045.88 : 1,485,056.28 = 316,118.64 : x
  2. Step 2: Convert to fraction form
    990,045.88/1,485,056.28 = 316,118.64/x
  3. Step 3: Cross multiply
    990,045.88x = 1,485,056.28 × 316,118.64
  4. Step 4: Simplify right side
    990,045.88x = 469,453,971,557.06
  5. Step 5: Solve for x
    x = 469,453,971,557.06/990,045.88
  6. Step 6: Final answer
    x = 474,173.96

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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.