Home / 782,054.18-1,078,678.23-717,731.17

Finding the Fourth Proportional to 782,054.18, 1,078,678.23 and 717,731.17

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Solution

The fourth proportional to 782,054.18, 1,078,678.23 and 717,731.17 is: 989,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,054.18 : 1,078,678.23 = 717,731.17 : x
  2. Step 2: Convert to fraction form
    782,054.18/1,078,678.23 = 717,731.17/x
  3. Step 3: Cross multiply
    782,054.18x = 1,078,678.23 × 717,731.17
  4. Step 4: Simplify right side
    782,054.18x = 774,200,988,071.43
  5. Step 5: Solve for x
    x = 774,200,988,071.43/782,054.18
  6. Step 6: Final answer
    x = 989,958.25

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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.