Home / 643,075.00-887,516.66-371,215.85

Finding the Fourth Proportional to 643,075.00, 887,516.66 and 371,215.85

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Solution

The fourth proportional to 643,075.00, 887,516.66 and 371,215.85 is: 512,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,075.00 : 887,516.66 = 371,215.85 : x
  2. Step 2: Convert to fraction form
    643,075.00/887,516.66 = 371,215.85/x
  3. Step 3: Cross multiply
    643,075.00x = 887,516.66 × 371,215.85
  4. Step 4: Simplify right side
    643,075.00x = 329,460,247,821.52
  5. Step 5: Solve for x
    x = 329,460,247,821.52/643,075.00
  6. Step 6: Final answer
    x = 512,320.10

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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.