Home / 6,420,420.68-8,859,988.56-3,519,712.40

Finding the Fourth Proportional to 6,420,420.68, 8,859,988.56 and 3,519,712.40

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Solution

The fourth proportional to 6,420,420.68, 8,859,988.56 and 3,519,712.40 is: 4,857,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,420.68 : 8,859,988.56 = 3,519,712.40 : x
  2. Step 2: Convert to fraction form
    6,420,420.68/8,859,988.56 = 3,519,712.40/x
  3. Step 3: Cross multiply
    6,420,420.68x = 8,859,988.56 × 3,519,712.40
  4. Step 4: Simplify right side
    6,420,420.68x = 31,184,611,598,490.14
  5. Step 5: Solve for x
    x = 31,184,611,598,490.14/6,420,420.68
  6. Step 6: Final answer
    x = 4,857,097.87

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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.