Home / 478,464,960-660,281,910.48-258,448,388.16

Finding the Fourth Proportional to 478,464,960, 660,281,910.48 and 258,448,388.16

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Solution

The fourth proportional to 478,464,960, 660,281,910.48 and 258,448,388.16 is: 356,658,919.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,464,960 : 660,281,910.48 = 258,448,388.16 : x
  2. Step 2: Convert to fraction form
    478,464,960/660,281,910.48 = 258,448,388.16/x
  3. Step 3: Cross multiply
    478,464,960x = 660,281,910.48 × 258,448,388.16
  4. Step 4: Simplify right side
    478,464,960x = 170,648,795,494,761,408
  5. Step 5: Solve for x
    x = 170,648,795,494,761,408/478,464,960
  6. Step 6: Final answer
    x = 356,658,919.17

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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.