Home / 458,425,709.60-687,638,564.40-313,306,887.20

Finding the Fourth Proportional to 458,425,709.60, 687,638,564.40 and 313,306,887.20

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Solution

The fourth proportional to 458,425,709.60, 687,638,564.40 and 313,306,887.20 is: 469,960,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,425,709.60 : 687,638,564.40 = 313,306,887.20 : x
  2. Step 2: Convert to fraction form
    458,425,709.60/687,638,564.40 = 313,306,887.20/x
  3. Step 3: Cross multiply
    458,425,709.60x = 687,638,564.40 × 313,306,887.20
  4. Step 4: Simplify right side
    458,425,709.60x = 215,441,898,130,840,736
  5. Step 5: Solve for x
    x = 215,441,898,130,840,736/458,425,709.60
  6. Step 6: Final answer
    x = 469,960,330.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.