Home / 762,803.20-1,143,185.76-402,238.72

Finding the Fourth Proportional to 762,803.20, 1,143,185.76 and 402,238.72

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Solution

The fourth proportional to 762,803.20, 1,143,185.76 and 402,238.72 is: 602,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,803.20 : 1,143,185.76 = 402,238.72 : x
  2. Step 2: Convert to fraction form
    762,803.20/1,143,185.76 = 402,238.72/x
  3. Step 3: Cross multiply
    762,803.20x = 1,143,185.76 × 402,238.72
  4. Step 4: Simplify right side
    762,803.20x = 459,833,576,824.63
  5. Step 5: Solve for x
    x = 459,833,576,824.63/762,803.20
  6. Step 6: Final answer
    x = 602,820.72

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1.5x scale

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.