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Finding the Fourth Proportional to 663,009.84, 993,325.68 and 402,874.29

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Solution

The fourth proportional to 663,009.84, 993,325.68 and 402,874.29 is: 603,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,009.84 : 993,325.68 = 402,874.29 : x
  2. Step 2: Convert to fraction form
    663,009.84/993,325.68 = 402,874.29/x
  3. Step 3: Cross multiply
    663,009.84x = 993,325.68 × 402,874.29
  4. Step 4: Simplify right side
    663,009.84x = 400,185,378,068.77
  5. Step 5: Solve for x
    x = 400,185,378,068.77/663,009.84
  6. Step 6: Final answer
    x = 603,588.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.