Home / 565,619.31-780,557.58-310,986.90

Finding the Fourth Proportional to 565,619.31, 780,557.58 and 310,986.90

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Solution

The fourth proportional to 565,619.31, 780,557.58 and 310,986.90 is: 429,163.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,619.31 : 780,557.58 = 310,986.90 : x
  2. Step 2: Convert to fraction form
    565,619.31/780,557.58 = 310,986.90/x
  3. Step 3: Cross multiply
    565,619.31x = 780,557.58 × 310,986.90
  4. Step 4: Simplify right side
    565,619.31x = 242,743,182,075.70
  5. Step 5: Solve for x
    x = 242,743,182,075.70/565,619.31
  6. Step 6: Final answer
    x = 429,163.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.