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Finding the Fourth Proportional to 704,694.16, 972,478.60 and 402,894.48

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Solution

The fourth proportional to 704,694.16, 972,478.60 and 402,894.48 is: 555,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,694.16 : 972,478.60 = 402,894.48 : x
  2. Step 2: Convert to fraction form
    704,694.16/972,478.60 = 402,894.48/x
  3. Step 3: Cross multiply
    704,694.16x = 972,478.60 × 402,894.48
  4. Step 4: Simplify right side
    704,694.16x = 391,806,259,858.13
  5. Step 5: Solve for x
    x = 391,806,259,858.13/704,694.16
  6. Step 6: Final answer
    x = 555,994.76

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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.