Home / 520,015,957.40-780,023,936.10-213,528,027.80

Finding the Fourth Proportional to 520,015,957.40, 780,023,936.10 and 213,528,027.80

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Solution

The fourth proportional to 520,015,957.40, 780,023,936.10 and 213,528,027.80 is: 320,292,041.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,015,957.40 : 780,023,936.10 = 213,528,027.80 : x
  2. Step 2: Convert to fraction form
    520,015,957.40/780,023,936.10 = 213,528,027.80/x
  3. Step 3: Cross multiply
    520,015,957.40x = 780,023,936.10 × 213,528,027.80
  4. Step 4: Simplify right side
    520,015,957.40x = 166,556,972,712,226,240
  5. Step 5: Solve for x
    x = 166,556,972,712,226,240/520,015,957.40
  6. Step 6: Final answer
    x = 320,292,041.70

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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.