Home / 842,939.04-1,264,407.12-393,509.28

Finding the Fourth Proportional to 842,939.04, 1,264,407.12 and 393,509.28

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Solution

The fourth proportional to 842,939.04, 1,264,407.12 and 393,509.28 is: 590,263.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,939.04 : 1,264,407.12 = 393,509.28 : x
  2. Step 2: Convert to fraction form
    842,939.04/1,264,407.12 = 393,509.28/x
  3. Step 3: Cross multiply
    842,939.04x = 1,264,407.12 × 393,509.28
  4. Step 4: Simplify right side
    842,939.04x = 497,555,935,418.07
  5. Step 5: Solve for x
    x = 497,555,935,418.07/842,939.04
  6. Step 6: Final answer
    x = 590,263.25

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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.