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Finding the Fourth Proportional to 882,672.30, 1,218,051.90 and 500,690.88

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Solution

The fourth proportional to 882,672.30, 1,218,051.90 and 500,690.88 is: 690,933.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,672.30 : 1,218,051.90 = 500,690.88 : x
  2. Step 2: Convert to fraction form
    882,672.30/1,218,051.90 = 500,690.88/x
  3. Step 3: Cross multiply
    882,672.30x = 1,218,051.90 × 500,690.88
  4. Step 4: Simplify right side
    882,672.30x = 609,867,477,696.67
  5. Step 5: Solve for x
    x = 609,867,477,696.67/882,672.30
  6. Step 6: Final answer
    x = 690,933.07

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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.