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Finding the Fourth Proportional to 777,957.36, 1,072,115.52 and 562,732.40

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Solution

The fourth proportional to 777,957.36, 1,072,115.52 and 562,732.40 is: 775,510.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,957.36 : 1,072,115.52 = 562,732.40 : x
  2. Step 2: Convert to fraction form
    777,957.36/1,072,115.52 = 562,732.40/x
  3. Step 3: Cross multiply
    777,957.36x = 1,072,115.52 × 562,732.40
  4. Step 4: Simplify right side
    777,957.36x = 603,314,139,646.85
  5. Step 5: Solve for x
    x = 603,314,139,646.85/777,957.36
  6. Step 6: Final answer
    x = 775,510.55

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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.