Home / 759,642.96-1,048,289.40-420,103.92

Finding the Fourth Proportional to 759,642.96, 1,048,289.40 and 420,103.92

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Solution

The fourth proportional to 759,642.96, 1,048,289.40 and 420,103.92 is: 579,733.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,642.96 : 1,048,289.40 = 420,103.92 : x
  2. Step 2: Convert to fraction form
    759,642.96/1,048,289.40 = 420,103.92/x
  3. Step 3: Cross multiply
    759,642.96x = 1,048,289.40 × 420,103.92
  4. Step 4: Simplify right side
    759,642.96x = 440,390,486,234.45
  5. Step 5: Solve for x
    x = 440,390,486,234.45/759,642.96
  6. Step 6: Final answer
    x = 579,733.52

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Double scale
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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.