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Finding the Fourth Proportional to 704,434.38, 972,119.44 and 402,634.86

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Solution

The fourth proportional to 704,434.38, 972,119.44 and 402,634.86 is: 555,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,434.38 : 972,119.44 = 402,634.86 : x
  2. Step 2: Convert to fraction form
    704,434.38/972,119.44 = 402,634.86/x
  3. Step 3: Cross multiply
    704,434.38x = 972,119.44 × 402,634.86
  4. Step 4: Simplify right side
    704,434.38x = 391,409,174,627.68
  5. Step 5: Solve for x
    x = 391,409,174,627.68/704,434.38
  6. Step 6: Final answer
    x = 555,636.10

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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.