Home / 1,281,418,821.66-1,768,426,634.32-716,870,025.56

Finding the Fourth Proportional to 1,281,418,821.66, 1,768,426,634.32 and 716,870,025.56

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Solution

The fourth proportional to 1,281,418,821.66, 1,768,426,634.32 and 716,870,025.56 is: 989,319,046.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,418,821.66 : 1,768,426,634.32 = 716,870,025.56 : x
  2. Step 2: Convert to fraction form
    1,281,418,821.66/1,768,426,634.32 = 716,870,025.56/x
  3. Step 3: Cross multiply
    1,281,418,821.66x = 1,768,426,634.32 × 716,870,025.56
  4. Step 4: Simplify right side
    1,281,418,821.66x = 1,267,732,046,545,963,008
  5. Step 5: Solve for x
    x = 1,267,732,046,545,963,008/1,281,418,821.66
  6. Step 6: Final answer
    x = 989,319,046.29

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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.