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Finding the Fourth Proportional to 882,671.81, 1,218,051.21 and 500,690.39

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Solution

The fourth proportional to 882,671.81, 1,218,051.21 and 500,690.39 is: 690,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,671.81 : 1,218,051.21 = 500,690.39 : x
  2. Step 2: Convert to fraction form
    882,671.81/1,218,051.21 = 500,690.39/x
  3. Step 3: Cross multiply
    882,671.81x = 1,218,051.21 × 500,690.39
  4. Step 4: Simplify right side
    882,671.81x = 609,866,529,284.62
  5. Step 5: Solve for x
    x = 609,866,529,284.62/882,671.81
  6. Step 6: Final answer
    x = 690,932.38

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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.