Home / 385,146,913.40-577,795,019.70-193,670,689.40

Finding the Fourth Proportional to 385,146,913.40, 577,795,019.70 and 193,670,689.40

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Solution

The fourth proportional to 385,146,913.40, 577,795,019.70 and 193,670,689.40 is: 290,543,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,146,913.40 : 577,795,019.70 = 193,670,689.40 : x
  2. Step 2: Convert to fraction form
    385,146,913.40/577,795,019.70 = 193,670,689.40/x
  3. Step 3: Cross multiply
    385,146,913.40x = 577,795,019.70 × 193,670,689.40
  4. Step 4: Simplify right side
    385,146,913.40x = 111,901,959,797,185,600
  5. Step 5: Solve for x
    x = 111,901,959,797,185,600/385,146,913.40
  6. Step 6: Final answer
    x = 290,543,571.57

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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.