Home / 920,116.80-1,380,218.40-289,051.20

Finding the Fourth Proportional to 920,116.80, 1,380,218.40 and 289,051.20

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Solution

The fourth proportional to 920,116.80, 1,380,218.40 and 289,051.20 is: 433,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,116.80 : 1,380,218.40 = 289,051.20 : x
  2. Step 2: Convert to fraction form
    920,116.80/1,380,218.40 = 289,051.20/x
  3. Step 3: Cross multiply
    920,116.80x = 1,380,218.40 × 289,051.20
  4. Step 4: Simplify right side
    920,116.80x = 398,953,784,782.08
  5. Step 5: Solve for x
    x = 398,953,784,782.08/920,116.80
  6. Step 6: Final answer
    x = 433,590.37

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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.