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Finding the Fourth Proportional to 558,036.74, 770,106.94 and 316,311.28

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Solution

The fourth proportional to 558,036.74, 770,106.94 and 316,311.28 is: 436,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,036.74 : 770,106.94 = 316,311.28 : x
  2. Step 2: Convert to fraction form
    558,036.74/770,106.94 = 316,311.28/x
  3. Step 3: Cross multiply
    558,036.74x = 770,106.94 × 316,311.28
  4. Step 4: Simplify right side
    558,036.74x = 243,593,510,991.49
  5. Step 5: Solve for x
    x = 243,593,510,991.49/558,036.74
  6. Step 6: Final answer
    x = 436,518.77

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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.