Home / 759,728.67-1,048,452.98-420,199.35

Finding the Fourth Proportional to 759,728.67, 1,048,452.98 and 420,199.35

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Solution

The fourth proportional to 759,728.67, 1,048,452.98 and 420,199.35 is: 579,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,728.67 : 1,048,452.98 = 420,199.35 : x
  2. Step 2: Convert to fraction form
    759,728.67/1,048,452.98 = 420,199.35/x
  3. Step 3: Cross multiply
    759,728.67x = 1,048,452.98 × 420,199.35
  4. Step 4: Simplify right side
    759,728.67x = 440,559,258,600.57
  5. Step 5: Solve for x
    x = 440,559,258,600.57/759,728.67
  6. Step 6: Final answer
    x = 579,890.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.