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Finding the Fourth Proportional to 704,969.76, 972,874.71 and 418,490.94

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Solution

The fourth proportional to 704,969.76, 972,874.71 and 418,490.94 is: 577,527.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,969.76 : 972,874.71 = 418,490.94 : x
  2. Step 2: Convert to fraction form
    704,969.76/972,874.71 = 418,490.94/x
  3. Step 3: Cross multiply
    704,969.76x = 972,874.71 × 418,490.94
  4. Step 4: Simplify right side
    704,969.76x = 407,139,251,890.13
  5. Step 5: Solve for x
    x = 407,139,251,890.13/704,969.76
  6. Step 6: Final answer
    x = 577,527.26

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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.