Home / 520,265,536.20-780,485,779.92-257,963,032.23

Finding the Fourth Proportional to 520,265,536.20, 780,485,779.92 and 257,963,032.23

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Solution

The fourth proportional to 520,265,536.20, 780,485,779.92 and 257,963,032.23 is: 386,987,921.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,265,536.20 : 780,485,779.92 = 257,963,032.23 : x
  2. Step 2: Convert to fraction form
    520,265,536.20/780,485,779.92 = 257,963,032.23/x
  3. Step 3: Cross multiply
    520,265,536.20x = 780,485,779.92 × 257,963,032.23
  4. Step 4: Simplify right side
    520,265,536.20x = 201,336,478,400,559,616
  5. Step 5: Solve for x
    x = 201,336,478,400,559,616/520,265,536.20
  6. Step 6: Final answer
    x = 386,987,921.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.