Home / 638,408,948.58-881,054,258.16-356,240,109.06

Finding the Fourth Proportional to 638,408,948.58, 881,054,258.16 and 356,240,109.06

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Solution

The fourth proportional to 638,408,948.58, 881,054,258.16 and 356,240,109.06 is: 491,639,200.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,408,948.58 : 881,054,258.16 = 356,240,109.06 : x
  2. Step 2: Convert to fraction form
    638,408,948.58/881,054,258.16 = 356,240,109.06/x
  3. Step 3: Cross multiply
    638,408,948.58x = 881,054,258.16 × 356,240,109.06
  4. Step 4: Simplify right side
    638,408,948.58x = 313,866,865,014,695,808
  5. Step 5: Solve for x
    x = 313,866,865,014,695,808/638,408,948.58
  6. Step 6: Final answer
    x = 491,639,200.41

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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.