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Finding the Fourth Proportional to 558,706.88, 771,032.90 and 316,999.64

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Solution

The fourth proportional to 558,706.88, 771,032.90 and 316,999.64 is: 437,469.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,706.88 : 771,032.90 = 316,999.64 : x
  2. Step 2: Convert to fraction form
    558,706.88/771,032.90 = 316,999.64/x
  3. Step 3: Cross multiply
    558,706.88x = 771,032.90 × 316,999.64
  4. Step 4: Simplify right side
    558,706.88x = 244,417,151,728.16
  5. Step 5: Solve for x
    x = 244,417,151,728.16/558,706.88
  6. Step 6: Final answer
    x = 437,469.38

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1.5x scale

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.