Home / 858,784.80-1,287,075.60-479,704.80

Finding the Fourth Proportional to 858,784.80, 1,287,075.60 and 479,704.80

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Solution

The fourth proportional to 858,784.80, 1,287,075.60 and 479,704.80 is: 718,941.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,784.80 : 1,287,075.60 = 479,704.80 : x
  2. Step 2: Convert to fraction form
    858,784.80/1,287,075.60 = 479,704.80/x
  3. Step 3: Cross multiply
    858,784.80x = 1,287,075.60 × 479,704.80
  4. Step 4: Simplify right side
    858,784.80x = 617,416,343,282.88
  5. Step 5: Solve for x
    x = 617,416,343,282.88/858,784.80
  6. Step 6: Final answer
    x = 718,941.86

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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.