Home / 768,723.10-1,152,084.47-312,782.98

Finding the Fourth Proportional to 768,723.10, 1,152,084.47 and 312,782.98

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Solution

The fourth proportional to 768,723.10, 1,152,084.47 and 312,782.98 is: 468,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,723.10 : 1,152,084.47 = 312,782.98 : x
  2. Step 2: Convert to fraction form
    768,723.10/1,152,084.47 = 312,782.98/x
  3. Step 3: Cross multiply
    768,723.10x = 1,152,084.47 × 312,782.98
  4. Step 4: Simplify right side
    768,723.10x = 360,352,413,738.32
  5. Step 5: Solve for x
    x = 360,352,413,738.32/768,723.10
  6. Step 6: Final answer
    x = 468,767.51

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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.