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Finding the Fourth Proportional to 439,618.47, 658,703.16 and 402,849.47

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Solution

The fourth proportional to 439,618.47, 658,703.16 and 402,849.47 is: 603,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,618.47 : 658,703.16 = 402,849.47 : x
  2. Step 2: Convert to fraction form
    439,618.47/658,703.16 = 402,849.47/x
  3. Step 3: Cross multiply
    439,618.47x = 658,703.16 × 402,849.47
  4. Step 4: Simplify right side
    439,618.47x = 265,358,215,599.81
  5. Step 5: Solve for x
    x = 265,358,215,599.81/439,618.47
  6. Step 6: Final answer
    x = 603,610.25

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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.