Home / 870,249.58-1,305,641.63-415,421.20

Finding the Fourth Proportional to 870,249.58, 1,305,641.63 and 415,421.20

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Solution

The fourth proportional to 870,249.58, 1,305,641.63 and 415,421.20 is: 623,259.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,249.58 : 1,305,641.63 = 415,421.20 : x
  2. Step 2: Convert to fraction form
    870,249.58/1,305,641.63 = 415,421.20/x
  3. Step 3: Cross multiply
    870,249.58x = 1,305,641.63 × 415,421.20
  4. Step 4: Simplify right side
    870,249.58x = 542,391,212,704.56
  5. Step 5: Solve for x
    x = 542,391,212,704.56/870,249.58
  6. Step 6: Final answer
    x = 623,259.38

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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.