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Finding the Fourth Proportional to 558,495.60, 770,699.59 and 310,122.15

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Solution

The fourth proportional to 558,495.60, 770,699.59 and 310,122.15 is: 427,955.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,495.60 : 770,699.59 = 310,122.15 : x
  2. Step 2: Convert to fraction form
    558,495.60/770,699.59 = 310,122.15/x
  3. Step 3: Cross multiply
    558,495.60x = 770,699.59 × 310,122.15
  4. Step 4: Simplify right side
    558,495.60x = 239,011,008,450.81
  5. Step 5: Solve for x
    x = 239,011,008,450.81/558,495.60
  6. Step 6: Final answer
    x = 427,955.05

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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.