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Finding the Fourth Proportional to 723,480.34, 998,354.21 and 401,178.50

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Solution

The fourth proportional to 723,480.34, 998,354.21 and 401,178.50 is: 553,599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,480.34 : 998,354.21 = 401,178.50 : x
  2. Step 2: Convert to fraction form
    723,480.34/998,354.21 = 401,178.50/x
  3. Step 3: Cross multiply
    723,480.34x = 998,354.21 × 401,178.50
  4. Step 4: Simplify right side
    723,480.34x = 400,518,244,926.48
  5. Step 5: Solve for x
    x = 400,518,244,926.48/723,480.34
  6. Step 6: Final answer
    x = 553,599.35

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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.