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Finding the Fourth Proportional to 639,434.84, 882,484.81 and 549,089.87

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Solution

The fourth proportional to 639,434.84, 882,484.81 and 549,089.87 is: 757,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,434.84 : 882,484.81 = 549,089.87 : x
  2. Step 2: Convert to fraction form
    639,434.84/882,484.81 = 549,089.87/x
  3. Step 3: Cross multiply
    639,434.84x = 882,484.81 × 549,089.87
  4. Step 4: Simplify right side
    639,434.84x = 484,563,463,814.73
  5. Step 5: Solve for x
    x = 484,563,463,814.73/639,434.84
  6. Step 6: Final answer
    x = 757,799.60

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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.