Home / 638,479,778.81-881,101,705.03-345,124,346.81

Finding the Fourth Proportional to 638,479,778.81, 881,101,705.03 and 345,124,346.81

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Solution

The fourth proportional to 638,479,778.81, 881,101,705.03 and 345,124,346.81 is: 476,271,387.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,479,778.81 : 881,101,705.03 = 345,124,346.81 : x
  2. Step 2: Convert to fraction form
    638,479,778.81/881,101,705.03 = 345,124,346.81/x
  3. Step 3: Cross multiply
    638,479,778.81x = 881,101,705.03 × 345,124,346.81
  4. Step 4: Simplify right side
    638,479,778.81x = 304,089,650,416,387,712
  5. Step 5: Solve for x
    x = 304,089,650,416,387,712/638,479,778.81
  6. Step 6: Final answer
    x = 476,271,387.93

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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.