Home / 419,348,314.28-578,702,421.63-231,172,474.20

Finding the Fourth Proportional to 419,348,314.28, 578,702,421.63 and 231,172,474.20

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Solution

The fourth proportional to 419,348,314.28, 578,702,421.63 and 231,172,474.20 is: 319,018,977.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,348,314.28 : 578,702,421.63 = 231,172,474.20 : x
  2. Step 2: Convert to fraction form
    419,348,314.28/578,702,421.63 = 231,172,474.20/x
  3. Step 3: Cross multiply
    419,348,314.28x = 578,702,421.63 × 231,172,474.20
  4. Step 4: Simplify right side
    419,348,314.28x = 133,780,070,633,738,688
  5. Step 5: Solve for x
    x = 133,780,070,633,738,688/419,348,314.28
  6. Step 6: Final answer
    x = 319,018,977.97

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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.