Home / 636,965,742,675.45-879,012,691,275.05-343,990,637,299.50

Finding the Fourth Proportional to 636,965,742,675.45, 879,012,691,275.05 and 343,990,637,299.50

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Solution

The fourth proportional to 636,965,742,675.45, 879,012,691,275.05 and 343,990,637,299.50 is: 474,707,061,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,965,742,675.45 : 879,012,691,275.05 = 343,990,637,299.50 : x
  2. Step 2: Convert to fraction form
    636,965,742,675.45/879,012,691,275.05 = 343,990,637,299.50/x
  3. Step 3: Cross multiply
    636,965,742,675.45x = 879,012,691,275.05 × 343,990,637,299.50
  4. Step 4: Simplify right side
    636,965,742,675.45x = 302,372,135,866,053,131,501,568
  5. Step 5: Solve for x
    x = 302,372,135,866,053,131,501,568/636,965,742,675.45
  6. Step 6: Final answer
    x = 474,707,061,318.55

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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.