Home / 991,571.02-1,367,864.42-647,608.30

Finding the Fourth Proportional to 991,571.02, 1,367,864.42 and 647,608.30

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Solution

The fourth proportional to 991,571.02, 1,367,864.42 and 647,608.30 is: 893,370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,571.02 : 1,367,864.42 = 647,608.30 : x
  2. Step 2: Convert to fraction form
    991,571.02/1,367,864.42 = 647,608.30/x
  3. Step 3: Cross multiply
    991,571.02x = 1,367,864.42 × 647,608.30
  4. Step 4: Simplify right side
    991,571.02x = 885,840,345,008.98
  5. Step 5: Solve for x
    x = 885,840,345,008.98/991,571.02
  6. Step 6: Final answer
    x = 893,370.55

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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.