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Finding the Fourth Proportional to 618,899.01, 854,083.70 and 346,978.37

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Solution

The fourth proportional to 618,899.01, 854,083.70 and 346,978.37 is: 478,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,899.01 : 854,083.70 = 346,978.37 : x
  2. Step 2: Convert to fraction form
    618,899.01/854,083.70 = 346,978.37/x
  3. Step 3: Cross multiply
    618,899.01x = 854,083.70 × 346,978.37
  4. Step 4: Simplify right side
    618,899.01x = 296,348,564,064.26
  5. Step 5: Solve for x
    x = 296,348,564,064.26/618,899.01
  6. Step 6: Final answer
    x = 478,831.86

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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.