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Finding the Fourth Proportional to 558,415.88, 770,492.22 and 316,643.96

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Solution

The fourth proportional to 558,415.88, 770,492.22 and 316,643.96 is: 436,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,415.88 : 770,492.22 = 316,643.96 : x
  2. Step 2: Convert to fraction form
    558,415.88/770,492.22 = 316,643.96/x
  3. Step 3: Cross multiply
    558,415.88x = 770,492.22 × 316,643.96
  4. Step 4: Simplify right side
    558,415.88x = 243,971,707,689.99
  5. Step 5: Solve for x
    x = 243,971,707,689.99/558,415.88
  6. Step 6: Final answer
    x = 436,899.66

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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.