Home / 810,703.04-1,216,300.64-431,559.20

Finding the Fourth Proportional to 810,703.04, 1,216,300.64 and 431,559.20

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Solution

The fourth proportional to 810,703.04, 1,216,300.64 and 431,559.20 is: 647,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,703.04 : 1,216,300.64 = 431,559.20 : x
  2. Step 2: Convert to fraction form
    810,703.04/1,216,300.64 = 431,559.20/x
  3. Step 3: Cross multiply
    810,703.04x = 1,216,300.64 × 431,559.20
  4. Step 4: Simplify right side
    810,703.04x = 524,905,731,157.89
  5. Step 5: Solve for x
    x = 524,905,731,157.89/810,703.04
  6. Step 6: Final answer
    x = 647,469.80

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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.