Home / 763,690.32-1,054,366.20-492,225.84

Finding the Fourth Proportional to 763,690.32, 1,054,366.20 and 492,225.84

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Solution

The fourth proportional to 763,690.32, 1,054,366.20 and 492,225.84 is: 679,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,690.32 : 1,054,366.20 = 492,225.84 : x
  2. Step 2: Convert to fraction form
    763,690.32/1,054,366.20 = 492,225.84/x
  3. Step 3: Cross multiply
    763,690.32x = 1,054,366.20 × 492,225.84
  4. Step 4: Simplify right side
    763,690.32x = 518,986,288,462.61
  5. Step 5: Solve for x
    x = 518,986,288,462.61/763,690.32
  6. Step 6: Final answer
    x = 679,576.88

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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.