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Finding the Fourth Proportional to 439,075.80, 657,629.55 and 360,343.80

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Solution

The fourth proportional to 439,075.80, 657,629.55 and 360,343.80 is: 539,708.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,075.80 : 657,629.55 = 360,343.80 : x
  2. Step 2: Convert to fraction form
    439,075.80/657,629.55 = 360,343.80/x
  3. Step 3: Cross multiply
    439,075.80x = 657,629.55 × 360,343.80
  4. Step 4: Simplify right side
    439,075.80x = 236,972,731,039.29
  5. Step 5: Solve for x
    x = 236,972,731,039.29/439,075.80
  6. Step 6: Final answer
    x = 539,708.02

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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.