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Finding the Fourth Proportional to 906,343.80, 1,359,515.70 and 790,870.20

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Solution

The fourth proportional to 906,343.80, 1,359,515.70 and 790,870.20 is: 1,186,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,343.80 : 1,359,515.70 = 790,870.20 : x
  2. Step 2: Convert to fraction form
    906,343.80/1,359,515.70 = 790,870.20/x
  3. Step 3: Cross multiply
    906,343.80x = 1,359,515.70 × 790,870.20
  4. Step 4: Simplify right side
    906,343.80x = 1,075,200,453,562.14
  5. Step 5: Solve for x
    x = 1,075,200,453,562.14/906,343.80
  6. Step 6: Final answer
    x = 1,186,305.30

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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.