Home / 839,931.70-1,259,897.55-520,338.10

Finding the Fourth Proportional to 839,931.70, 1,259,897.55 and 520,338.10

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Solution

The fourth proportional to 839,931.70, 1,259,897.55 and 520,338.10 is: 780,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,931.70 : 1,259,897.55 = 520,338.10 : x
  2. Step 2: Convert to fraction form
    839,931.70/1,259,897.55 = 520,338.10/x
  3. Step 3: Cross multiply
    839,931.70x = 1,259,897.55 × 520,338.10
  4. Step 4: Simplify right side
    839,931.70x = 655,572,697,361.66
  5. Step 5: Solve for x
    x = 655,572,697,361.66/839,931.70
  6. Step 6: Final answer
    x = 780,507.15

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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.