Home / 1,381,047.81-1,905,509.88-909,506.89

Finding the Fourth Proportional to 1,381,047.81, 1,905,509.88 and 909,506.89

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Solution

The fourth proportional to 1,381,047.81, 1,905,509.88 and 909,506.89 is: 1,254,898.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,047.81 : 1,905,509.88 = 909,506.89 : x
  2. Step 2: Convert to fraction form
    1,381,047.81/1,905,509.88 = 909,506.89/x
  3. Step 3: Cross multiply
    1,381,047.81x = 1,905,509.88 × 909,506.89
  4. Step 4: Simplify right side
    1,381,047.81x = 1,733,074,363,469.95
  5. Step 5: Solve for x
    x = 1,733,074,363,469.95/1,381,047.81
  6. Step 6: Final answer
    x = 1,254,898.16

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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.