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Finding the Fourth Proportional to 549,412.21, 822,641.79 and 348,645.61

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Solution

The fourth proportional to 549,412.21, 822,641.79 and 348,645.61 is: 522,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,412.21 : 822,641.79 = 348,645.61 : x
  2. Step 2: Convert to fraction form
    549,412.21/822,641.79 = 348,645.61/x
  3. Step 3: Cross multiply
    549,412.21x = 822,641.79 × 348,645.61
  4. Step 4: Simplify right side
    549,412.21x = 286,810,444,572.83
  5. Step 5: Solve for x
    x = 286,810,444,572.83/549,412.21
  6. Step 6: Final answer
    x = 522,031.44

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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.