Home / 498,510,915.36-687,971,400.48-300,334,795.20

Finding the Fourth Proportional to 498,510,915.36, 687,971,400.48 and 300,334,795.20

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Solution

The fourth proportional to 498,510,915.36, 687,971,400.48 and 300,334,795.20 is: 414,477,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,510,915.36 : 687,971,400.48 = 300,334,795.20 : x
  2. Step 2: Convert to fraction form
    498,510,915.36/687,971,400.48 = 300,334,795.20/x
  3. Step 3: Cross multiply
    498,510,915.36x = 687,971,400.48 × 300,334,795.20
  4. Step 4: Simplify right side
    498,510,915.36x = 206,621,749,666,617,984
  5. Step 5: Solve for x
    x = 206,621,749,666,617,984/498,510,915.36
  6. Step 6: Final answer
    x = 414,477,884.64

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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.