Home / 918,640.32-1,267,765.86-510,784.02

Finding the Fourth Proportional to 918,640.32, 1,267,765.86 and 510,784.02

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Solution

The fourth proportional to 918,640.32, 1,267,765.86 and 510,784.02 is: 704,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,640.32 : 1,267,765.86 = 510,784.02 : x
  2. Step 2: Convert to fraction form
    918,640.32/1,267,765.86 = 510,784.02/x
  3. Step 3: Cross multiply
    918,640.32x = 1,267,765.86 × 510,784.02
  4. Step 4: Simplify right side
    918,640.32x = 647,554,542,389.56
  5. Step 5: Solve for x
    x = 647,554,542,389.56/918,640.32
  6. Step 6: Final answer
    x = 704,905.42

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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.