Home / 559,838,903.20-772,578,015.12-312,320,257.12

Finding the Fourth Proportional to 559,838,903.20, 772,578,015.12 and 312,320,257.12

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Solution

The fourth proportional to 559,838,903.20, 772,578,015.12 and 312,320,257.12 is: 431,002,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,838,903.20 : 772,578,015.12 = 312,320,257.12 : x
  2. Step 2: Convert to fraction form
    559,838,903.20/772,578,015.12 = 312,320,257.12/x
  3. Step 3: Cross multiply
    559,838,903.20x = 772,578,015.12 × 312,320,257.12
  4. Step 4: Simplify right side
    559,838,903.20x = 241,291,764,327,537,664
  5. Step 5: Solve for x
    x = 241,291,764,327,537,664/559,838,903.20
  6. Step 6: Final answer
    x = 431,002,138.20

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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.