Home / 687,453,174,488.70-948,735,521,615.03-398,496,033,235.28

Finding the Fourth Proportional to 687,453,174,488.70, 948,735,521,615.03 and 398,496,033,235.28

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Solution

The fourth proportional to 687,453,174,488.70, 948,735,521,615.03 and 398,496,033,235.28 is: 549,953,590,997.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,453,174,488.70 : 948,735,521,615.03 = 398,496,033,235.28 : x
  2. Step 2: Convert to fraction form
    687,453,174,488.70/948,735,521,615.03 = 398,496,033,235.28/x
  3. Step 3: Cross multiply
    687,453,174,488.70x = 948,735,521,615.03 × 398,496,033,235.28
  4. Step 4: Simplify right side
    687,453,174,488.70x = 378,067,341,952,993,720,270,848
  5. Step 5: Solve for x
    x = 378,067,341,952,993,720,270,848/687,453,174,488.70
  6. Step 6: Final answer
    x = 549,953,590,997.94

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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.