Home / 485,377,689.30-728,066,533.95-178,889,759.70

Finding the Fourth Proportional to 485,377,689.30, 728,066,533.95 and 178,889,759.70

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Solution

The fourth proportional to 485,377,689.30, 728,066,533.95 and 178,889,759.70 is: 268,334,639.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,377,689.30 : 728,066,533.95 = 178,889,759.70 : x
  2. Step 2: Convert to fraction form
    485,377,689.30/728,066,533.95 = 178,889,759.70/x
  3. Step 3: Cross multiply
    485,377,689.30x = 728,066,533.95 × 178,889,759.70
  4. Step 4: Simplify right side
    485,377,689.30x = 130,243,647,303,927,392
  5. Step 5: Solve for x
    x = 130,243,647,303,927,392/485,377,689.30
  6. Step 6: Final answer
    x = 268,334,639.55

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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.