Home / 385,695,848.28-578,697,076.14-123,420,809.84

Finding the Fourth Proportional to 385,695,848.28, 578,697,076.14 and 123,420,809.84

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Solution

The fourth proportional to 385,695,848.28, 578,697,076.14 and 123,420,809.84 is: 185,180,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,695,848.28 : 578,697,076.14 = 123,420,809.84 : x
  2. Step 2: Convert to fraction form
    385,695,848.28/578,697,076.14 = 123,420,809.84/x
  3. Step 3: Cross multiply
    385,695,848.28x = 578,697,076.14 × 123,420,809.84
  4. Step 4: Simplify right side
    385,695,848.28x = 71,423,261,789,238,944
  5. Step 5: Solve for x
    x = 71,423,261,789,238,944/385,695,848.28
  6. Step 6: Final answer
    x = 185,180,271.21

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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.