Home / 1,913,236.65-2,640,166.74-1,188,068.76

Finding the Fourth Proportional to 1,913,236.65, 2,640,166.74 and 1,188,068.76

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Solution

The fourth proportional to 1,913,236.65, 2,640,166.74 and 1,188,068.76 is: 1,639,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,236.65 : 2,640,166.74 = 1,188,068.76 : x
  2. Step 2: Convert to fraction form
    1,913,236.65/2,640,166.74 = 1,188,068.76/x
  3. Step 3: Cross multiply
    1,913,236.65x = 2,640,166.74 × 1,188,068.76
  4. Step 4: Simplify right side
    1,913,236.65x = 3,136,699,624,985.04
  5. Step 5: Solve for x
    x = 3,136,699,624,985.04/1,913,236.65
  6. Step 6: Final answer
    x = 1,639,472.89

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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.