Home / 849,086.52-1,272,580.02-428,482.68

Finding the Fourth Proportional to 849,086.52, 1,272,580.02 and 428,482.68

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Solution

The fourth proportional to 849,086.52, 1,272,580.02 and 428,482.68 is: 642,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,086.52 : 1,272,580.02 = 428,482.68 : x
  2. Step 2: Convert to fraction form
    849,086.52/1,272,580.02 = 428,482.68/x
  3. Step 3: Cross multiply
    849,086.52x = 1,272,580.02 × 428,482.68
  4. Step 4: Simplify right side
    849,086.52x = 545,278,497,484.05
  5. Step 5: Solve for x
    x = 545,278,497,484.05/849,086.52
  6. Step 6: Final answer
    x = 642,194.27

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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.