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Finding the Fourth Proportional to 568,264.11, 784,220.74 and 310,157.51

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Solution

The fourth proportional to 568,264.11, 784,220.74 and 310,157.51 is: 428,026.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,264.11 : 784,220.74 = 310,157.51 : x
  2. Step 2: Convert to fraction form
    568,264.11/784,220.74 = 310,157.51/x
  3. Step 3: Cross multiply
    568,264.11x = 784,220.74 × 310,157.51
  4. Step 4: Simplify right side
    568,264.11x = 243,231,947,312.26
  5. Step 5: Solve for x
    x = 243,231,947,312.26/568,264.11
  6. Step 6: Final answer
    x = 428,026.24

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1.5x scale

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.