Home / 1,278,533.86-1,917,302.30-479,378.98

Finding the Fourth Proportional to 1,278,533.86, 1,917,302.30 and 479,378.98

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Solution

The fourth proportional to 1,278,533.86, 1,917,302.30 and 479,378.98 is: 718,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,533.86 : 1,917,302.30 = 479,378.98 : x
  2. Step 2: Convert to fraction form
    1,278,533.86/1,917,302.30 = 479,378.98/x
  3. Step 3: Cross multiply
    1,278,533.86x = 1,917,302.30 × 479,378.98
  4. Step 4: Simplify right side
    1,278,533.86x = 919,114,420,925.65
  5. Step 5: Solve for x
    x = 919,114,420,925.65/1,278,533.86
  6. Step 6: Final answer
    x = 718,881.56

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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.