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Finding the Fourth Proportional to 723,406.32, 998,312.68 and 401,130

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Solution

The fourth proportional to 723,406.32, 998,312.68 and 401,130 is: 553,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,406.32 : 998,312.68 = 401,130 : x
  2. Step 2: Convert to fraction form
    723,406.32/998,312.68 = 401,130/x
  3. Step 3: Cross multiply
    723,406.32x = 998,312.68 × 401,130
  4. Step 4: Simplify right side
    723,406.32x = 400,453,165,328.40
  5. Step 5: Solve for x
    x = 400,453,165,328.40/723,406.32
  6. Step 6: Final answer
    x = 553,566.03

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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.