Home / 717,830.20-1,075,449.30-418,065.40

Finding the Fourth Proportional to 717,830.20, 1,075,449.30 and 418,065.40

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Solution

The fourth proportional to 717,830.20, 1,075,449.30 and 418,065.40 is: 626,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,830.20 : 1,075,449.30 = 418,065.40 : x
  2. Step 2: Convert to fraction form
    717,830.20/1,075,449.30 = 418,065.40/x
  3. Step 3: Cross multiply
    717,830.20x = 1,075,449.30 × 418,065.40
  4. Step 4: Simplify right side
    717,830.20x = 449,608,141,784.22
  5. Step 5: Solve for x
    x = 449,608,141,784.22/717,830.20
  6. Step 6: Final answer
    x = 626,343.31

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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.