Home / 1,218,309.23-1,680,738.84-734,605.65

Finding the Fourth Proportional to 1,218,309.23, 1,680,738.84 and 734,605.65

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Solution

The fourth proportional to 1,218,309.23, 1,680,738.84 and 734,605.65 is: 1,013,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,309.23 : 1,680,738.84 = 734,605.65 : x
  2. Step 2: Convert to fraction form
    1,218,309.23/1,680,738.84 = 734,605.65/x
  3. Step 3: Cross multiply
    1,218,309.23x = 1,680,738.84 × 734,605.65
  4. Step 4: Simplify right side
    1,218,309.23x = 1,234,680,248,038.45
  5. Step 5: Solve for x
    x = 1,234,680,248,038.45/1,218,309.23
  6. Step 6: Final answer
    x = 1,013,437.49

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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.