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Finding the Fourth Proportional to 556,389.41, 767,800.89 and 308,042.43

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Solution

The fourth proportional to 556,389.41, 767,800.89 and 308,042.43 is: 425,089.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,389.41 : 767,800.89 = 308,042.43 : x
  2. Step 2: Convert to fraction form
    556,389.41/767,800.89 = 308,042.43/x
  3. Step 3: Cross multiply
    556,389.41x = 767,800.89 × 308,042.43
  4. Step 4: Simplify right side
    556,389.41x = 236,515,248,971.38
  5. Step 5: Solve for x
    x = 236,515,248,971.38/556,389.41
  6. Step 6: Final answer
    x = 425,089.42

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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.