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Finding the Fourth Proportional to 704,620.28, 972,628.16 and 418,140.36

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Solution

The fourth proportional to 704,620.28, 972,628.16 and 418,140.36 is: 577,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,620.28 : 972,628.16 = 418,140.36 : x
  2. Step 2: Convert to fraction form
    704,620.28/972,628.16 = 418,140.36/x
  3. Step 3: Cross multiply
    704,620.28x = 972,628.16 × 418,140.36
  4. Step 4: Simplify right side
    704,620.28x = 406,695,086,877.84
  5. Step 5: Solve for x
    x = 406,695,086,877.84/704,620.28
  6. Step 6: Final answer
    x = 577,183.34

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1.5x scale

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.