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Finding the Fourth Proportional to 1,425,114.02, 1,966,619.70 and 813,255.81

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Solution

The fourth proportional to 1,425,114.02, 1,966,619.70 and 813,255.81 is: 1,122,271.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,114.02 : 1,966,619.70 = 813,255.81 : x
  2. Step 2: Convert to fraction form
    1,425,114.02/1,966,619.70 = 813,255.81/x
  3. Step 3: Cross multiply
    1,425,114.02x = 1,966,619.70 × 813,255.81
  4. Step 4: Simplify right side
    1,425,114.02x = 1,599,364,897,085.46
  5. Step 5: Solve for x
    x = 1,599,364,897,085.46/1,425,114.02
  6. Step 6: Final answer
    x = 1,122,271.54

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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.