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Finding the Fourth Proportional to 390,641.07, 588,889.53 and 364,600.98

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Solution

The fourth proportional to 390,641.07, 588,889.53 and 364,600.98 is: 549,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,641.07 : 588,889.53 = 364,600.98 : x
  2. Step 2: Convert to fraction form
    390,641.07/588,889.53 = 364,600.98/x
  3. Step 3: Cross multiply
    390,641.07x = 588,889.53 × 364,600.98
  4. Step 4: Simplify right side
    390,641.07x = 214,709,699,749.74
  5. Step 5: Solve for x
    x = 214,709,699,749.74/390,641.07
  6. Step 6: Final answer
    x = 549,634.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.