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Finding the Fourth Proportional to 425,784.51, 637,953.78 and 256,950.06

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Solution

The fourth proportional to 425,784.51, 637,953.78 and 256,950.06 is: 384,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,784.51 : 637,953.78 = 256,950.06 : x
  2. Step 2: Convert to fraction form
    425,784.51/637,953.78 = 256,950.06/x
  3. Step 3: Cross multiply
    425,784.51x = 637,953.78 × 256,950.06
  4. Step 4: Simplify right side
    425,784.51x = 163,922,262,048.23
  5. Step 5: Solve for x
    x = 163,922,262,048.23/425,784.51
  6. Step 6: Final answer
    x = 384,988.79

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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.