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Finding the Fourth Proportional to 519,700, 779,550 and 125,716

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Solution

The fourth proportional to 519,700, 779,550 and 125,716 is: 188,574

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,700 : 779,550 = 125,716 : x
  2. Step 2: Convert to fraction form
    519,700/779,550 = 125,716/x
  3. Step 3: Cross multiply
    519,700x = 779,550 × 125,716
  4. Step 4: Simplify right side
    519,700x = 98,001,907,800
  5. Step 5: Solve for x
    x = 98,001,907,800/519,700
  6. Step 6: Final answer
    x = 188,574

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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.