Home / 819,731.88-1,131,036.84-497,434.32

Finding the Fourth Proportional to 819,731.88, 1,131,036.84 and 497,434.32

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Solution

The fourth proportional to 819,731.88, 1,131,036.84 and 497,434.32 is: 686,342.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,731.88 : 1,131,036.84 = 497,434.32 : x
  2. Step 2: Convert to fraction form
    819,731.88/1,131,036.84 = 497,434.32/x
  3. Step 3: Cross multiply
    819,731.88x = 1,131,036.84 × 497,434.32
  4. Step 4: Simplify right side
    819,731.88x = 562,616,541,400.35
  5. Step 5: Solve for x
    x = 562,616,541,400.35/819,731.88
  6. Step 6: Final answer
    x = 686,342.15

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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.