Home / 720,985.98-1,082,128.98-384,307.04

Finding the Fourth Proportional to 720,985.98, 1,082,128.98 and 384,307.04

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Solution

The fourth proportional to 720,985.98, 1,082,128.98 and 384,307.04 is: 576,807.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,985.98 : 1,082,128.98 = 384,307.04 : x
  2. Step 2: Convert to fraction form
    720,985.98/1,082,128.98 = 384,307.04/x
  3. Step 3: Cross multiply
    720,985.98x = 1,082,128.98 × 384,307.04
  4. Step 4: Simplify right side
    720,985.98x = 415,869,785,202.02
  5. Step 5: Solve for x
    x = 415,869,785,202.02/720,985.98
  6. Step 6: Final answer
    x = 576,807.03

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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.