Home / 778,837.36-1,074,828.12-492,253.36

Finding the Fourth Proportional to 778,837.36, 1,074,828.12 and 492,253.36

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Solution

The fourth proportional to 778,837.36, 1,074,828.12 and 492,253.36 is: 679,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,837.36 : 1,074,828.12 = 492,253.36 : x
  2. Step 2: Convert to fraction form
    778,837.36/1,074,828.12 = 492,253.36/x
  3. Step 3: Cross multiply
    778,837.36x = 1,074,828.12 × 492,253.36
  4. Step 4: Simplify right side
    778,837.36x = 529,087,753,492.48
  5. Step 5: Solve for x
    x = 529,087,753,492.48/778,837.36
  6. Step 6: Final answer
    x = 679,330.22

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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.