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Finding the Fourth Proportional to 882,842.58, 1,218,362.81 and 520,281.72

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Solution

The fourth proportional to 882,842.58, 1,218,362.81 and 520,281.72 is: 718,012.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,842.58 : 1,218,362.81 = 520,281.72 : x
  2. Step 2: Convert to fraction form
    882,842.58/1,218,362.81 = 520,281.72/x
  3. Step 3: Cross multiply
    882,842.58x = 1,218,362.81 × 520,281.72
  4. Step 4: Simplify right side
    882,842.58x = 633,891,895,769.43
  5. Step 5: Solve for x
    x = 633,891,895,769.43/882,842.58
  6. Step 6: Final answer
    x = 718,012.37

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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.