Home / 880,711,085.69-1,215,386,103.05-518,620,846.22

Finding the Fourth Proportional to 880,711,085.69, 1,215,386,103.05 and 518,620,846.22

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Solution

The fourth proportional to 880,711,085.69, 1,215,386,103.05 and 518,620,846.22 is: 715,699,597.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,711,085.69 : 1,215,386,103.05 = 518,620,846.22 : x
  2. Step 2: Convert to fraction form
    880,711,085.69/1,215,386,103.05 = 518,620,846.22/x
  3. Step 3: Cross multiply
    880,711,085.69x = 1,215,386,103.05 × 518,620,846.22
  4. Step 4: Simplify right side
    880,711,085.69x = 630,324,569,251,972,736
  5. Step 5: Solve for x
    x = 630,324,569,251,972,736/880,711,085.69
  6. Step 6: Final answer
    x = 715,699,597.17

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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.