Home / 1,020,986.76-1,531,557.90-311,075.40

Finding the Fourth Proportional to 1,020,986.76, 1,531,557.90 and 311,075.40

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Solution

The fourth proportional to 1,020,986.76, 1,531,557.90 and 311,075.40 is: 466,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,986.76 : 1,531,557.90 = 311,075.40 : x
  2. Step 2: Convert to fraction form
    1,020,986.76/1,531,557.90 = 311,075.40/x
  3. Step 3: Cross multiply
    1,020,986.76x = 1,531,557.90 × 311,075.40
  4. Step 4: Simplify right side
    1,020,986.76x = 476,429,986,365.66
  5. Step 5: Solve for x
    x = 476,429,986,365.66/1,020,986.76
  6. Step 6: Final answer
    x = 466,636.79

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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.