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Finding the Fourth Proportional to 818,602.10, 1,129,678.35 and 456,024.84

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Solution

The fourth proportional to 818,602.10, 1,129,678.35 and 456,024.84 is: 629,318.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,602.10 : 1,129,678.35 = 456,024.84 : x
  2. Step 2: Convert to fraction form
    818,602.10/1,129,678.35 = 456,024.84/x
  3. Step 3: Cross multiply
    818,602.10x = 1,129,678.35 × 456,024.84
  4. Step 4: Simplify right side
    818,602.10x = 515,161,382,863.83
  5. Step 5: Solve for x
    x = 515,161,382,863.83/818,602.10
  6. Step 6: Final answer
    x = 629,318.42

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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.