Home / 818,562.08-1,129,649.72-455,985.86

Finding the Fourth Proportional to 818,562.08, 1,129,649.72 and 455,985.86

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Solution

The fourth proportional to 818,562.08, 1,129,649.72 and 455,985.86 is: 629,279.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,562.08 : 1,129,649.72 = 455,985.86 : x
  2. Step 2: Convert to fraction form
    818,562.08/1,129,649.72 = 455,985.86/x
  3. Step 3: Cross multiply
    818,562.08x = 1,129,649.72 × 455,985.86
  4. Step 4: Simplify right side
    818,562.08x = 515,104,299,617.15
  5. Step 5: Solve for x
    x = 515,104,299,617.15/818,562.08
  6. Step 6: Final answer
    x = 629,279.45

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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.