Home / 638,173.20-957,259.80-520,075.20

Finding the Fourth Proportional to 638,173.20, 957,259.80 and 520,075.20

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Solution

The fourth proportional to 638,173.20, 957,259.80 and 520,075.20 is: 780,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,173.20 : 957,259.80 = 520,075.20 : x
  2. Step 2: Convert to fraction form
    638,173.20/957,259.80 = 520,075.20/x
  3. Step 3: Cross multiply
    638,173.20x = 957,259.80 × 520,075.20
  4. Step 4: Simplify right side
    638,173.20x = 497,847,081,936.96
  5. Step 5: Solve for x
    x = 497,847,081,936.96/638,173.20
  6. Step 6: Final answer
    x = 780,112.80

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1.5x scale

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.