Home / 520,016,061.90-780,024,092.85-213,528,132.30

Finding the Fourth Proportional to 520,016,061.90, 780,024,092.85 and 213,528,132.30

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Solution

The fourth proportional to 520,016,061.90, 780,024,092.85 and 213,528,132.30 is: 320,292,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,016,061.90 : 780,024,092.85 = 213,528,132.30 : x
  2. Step 2: Convert to fraction form
    520,016,061.90/780,024,092.85 = 213,528,132.30/x
  3. Step 3: Cross multiply
    520,016,061.90x = 780,024,092.85 × 213,528,132.30
  4. Step 4: Simplify right side
    520,016,061.90x = 166,557,087,695,262,304
  5. Step 5: Solve for x
    x = 166,557,087,695,262,304/520,016,061.90
  6. Step 6: Final answer
    x = 320,292,198.45

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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.