Home / 864,087.40-1,296,131.10-780,106.60

Finding the Fourth Proportional to 864,087.40, 1,296,131.10 and 780,106.60

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Solution

The fourth proportional to 864,087.40, 1,296,131.10 and 780,106.60 is: 1,170,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,087.40 : 1,296,131.10 = 780,106.60 : x
  2. Step 2: Convert to fraction form
    864,087.40/1,296,131.10 = 780,106.60/x
  3. Step 3: Cross multiply
    864,087.40x = 1,296,131.10 × 780,106.60
  4. Step 4: Simplify right side
    864,087.40x = 1,011,120,425,575.26
  5. Step 5: Solve for x
    x = 1,011,120,425,575.26/864,087.40
  6. Step 6: Final answer
    x = 1,170,159.90

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1.5x scale

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.