Home / 419,221,998.42-578,528,601.12-240,591,642.46

Finding the Fourth Proportional to 419,221,998.42, 578,528,601.12 and 240,591,642.46

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Solution

The fourth proportional to 419,221,998.42, 578,528,601.12 and 240,591,642.46 is: 332,017,754.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,221,998.42 : 578,528,601.12 = 240,591,642.46 : x
  2. Step 2: Convert to fraction form
    419,221,998.42/578,528,601.12 = 240,591,642.46/x
  3. Step 3: Cross multiply
    419,221,998.42x = 578,528,601.12 × 240,591,642.46
  4. Step 4: Simplify right side
    419,221,998.42x = 139,189,146,353,547,008
  5. Step 5: Solve for x
    x = 139,189,146,353,547,008/419,221,998.42
  6. Step 6: Final answer
    x = 332,017,754.03

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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.