Home / 1,297,312.40-1,790,401.79-724,463.28

Finding the Fourth Proportional to 1,297,312.40, 1,790,401.79 and 724,463.28

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Solution

The fourth proportional to 1,297,312.40, 1,790,401.79 and 724,463.28 is: 999,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,312.40 : 1,790,401.79 = 724,463.28 : x
  2. Step 2: Convert to fraction form
    1,297,312.40/1,790,401.79 = 724,463.28/x
  3. Step 3: Cross multiply
    1,297,312.40x = 1,790,401.79 × 724,463.28
  4. Step 4: Simplify right side
    1,297,312.40x = 1,297,080,355,112.43
  5. Step 5: Solve for x
    x = 1,297,080,355,112.43/1,297,312.40
  6. Step 6: Final answer
    x = 999,821.13

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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.