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Finding the Fourth Proportional to 723,684.66, 998,804.40 and 401,498.55

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Solution

The fourth proportional to 723,684.66, 998,804.40 and 401,498.55 is: 554,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,684.66 : 998,804.40 = 401,498.55 : x
  2. Step 2: Convert to fraction form
    723,684.66/998,804.40 = 401,498.55/x
  3. Step 3: Cross multiply
    723,684.66x = 998,804.40 × 401,498.55
  4. Step 4: Simplify right side
    723,684.66x = 401,018,518,333.62
  5. Step 5: Solve for x
    x = 401,018,518,333.62/723,684.66
  6. Step 6: Final answer
    x = 554,134.34

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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.