Home / 920,477.04-1,380,794.40-280,924.80

Finding the Fourth Proportional to 920,477.04, 1,380,794.40 and 280,924.80

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Solution

The fourth proportional to 920,477.04, 1,380,794.40 and 280,924.80 is: 421,411.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,477.04 : 1,380,794.40 = 280,924.80 : x
  2. Step 2: Convert to fraction form
    920,477.04/1,380,794.40 = 280,924.80/x
  3. Step 3: Cross multiply
    920,477.04x = 1,380,794.40 × 280,924.80
  4. Step 4: Simplify right side
    920,477.04x = 387,899,390,661.12
  5. Step 5: Solve for x
    x = 387,899,390,661.12/920,477.04
  6. Step 6: Final answer
    x = 421,411.26

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Double scale
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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.