Home / 687,453,174,486.70-948,735,521,612.25-398,496,033,233.28

Finding the Fourth Proportional to 687,453,174,486.70, 948,735,521,612.25 and 398,496,033,233.28

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Solution

The fourth proportional to 687,453,174,486.70, 948,735,521,612.25 and 398,496,033,233.28 is: 549,953,590,995.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,453,174,486.70 : 948,735,521,612.25 = 398,496,033,233.28 : x
  2. Step 2: Convert to fraction form
    687,453,174,486.70/948,735,521,612.25 = 398,496,033,233.28/x
  3. Step 3: Cross multiply
    687,453,174,486.70x = 948,735,521,612.25 × 398,496,033,233.28
  4. Step 4: Simplify right side
    687,453,174,486.70x = 378,067,341,949,988,451,123,200
  5. Step 5: Solve for x
    x = 378,067,341,949,988,451,123,200/687,453,174,486.70
  6. Step 6: Final answer
    x = 549,953,590,995.17

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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.