Home / 407,372,378.31-562,185,926.01-288,507,627.05

Finding the Fourth Proportional to 407,372,378.31, 562,185,926.01 and 288,507,627.05

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Solution

The fourth proportional to 407,372,378.31, 562,185,926.01 and 288,507,627.05 is: 398,149,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,372,378.31 : 562,185,926.01 = 288,507,627.05 : x
  2. Step 2: Convert to fraction form
    407,372,378.31/562,185,926.01 = 288,507,627.05/x
  3. Step 3: Cross multiply
    407,372,378.31x = 562,185,926.01 × 288,507,627.05
  4. Step 4: Simplify right side
    407,372,378.31x = 162,194,927,471,241,056
  5. Step 5: Solve for x
    x = 162,194,927,471,241,056/407,372,378.31
  6. Step 6: Final answer
    x = 398,149,055.03

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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.