Home / 785,589,384.92-1,178,307,562.86-319,278,767.72

Finding the Fourth Proportional to 785,589,384.92, 1,178,307,562.86 and 319,278,767.72

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Solution

The fourth proportional to 785,589,384.92, 1,178,307,562.86 and 319,278,767.72 is: 478,887,054.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,589,384.92 : 1,178,307,562.86 = 319,278,767.72 : x
  2. Step 2: Convert to fraction form
    785,589,384.92/1,178,307,562.86 = 319,278,767.72/x
  3. Step 3: Cross multiply
    785,589,384.92x = 1,178,307,562.86 × 319,278,767.72
  4. Step 4: Simplify right side
    785,589,384.92x = 376,208,586,665,097,216
  5. Step 5: Solve for x
    x = 376,208,586,665,097,216/785,589,384.92
  6. Step 6: Final answer
    x = 478,887,054.59

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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.