Home / 819,820.86-1,131,362.55-457,276.20

Finding the Fourth Proportional to 819,820.86, 1,131,362.55 and 457,276.20

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Solution

The fourth proportional to 819,820.86, 1,131,362.55 and 457,276.20 is: 631,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,820.86 : 1,131,362.55 = 457,276.20 : x
  2. Step 2: Convert to fraction form
    819,820.86/1,131,362.55 = 457,276.20/x
  3. Step 3: Cross multiply
    819,820.86x = 1,131,362.55 × 457,276.20
  4. Step 4: Simplify right side
    819,820.86x = 517,345,167,686.31
  5. Step 5: Solve for x
    x = 517,345,167,686.31/819,820.86
  6. Step 6: Final answer
    x = 631,046.60

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1.5x scale

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.