Home / 778,368.76-1,074,107.19-438,815.14

Finding the Fourth Proportional to 778,368.76, 1,074,107.19 and 438,815.14

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Solution

The fourth proportional to 778,368.76, 1,074,107.19 and 438,815.14 is: 605,541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,368.76 : 1,074,107.19 = 438,815.14 : x
  2. Step 2: Convert to fraction form
    778,368.76/1,074,107.19 = 438,815.14/x
  3. Step 3: Cross multiply
    778,368.76x = 1,074,107.19 × 438,815.14
  4. Step 4: Simplify right side
    778,368.76x = 471,334,496,954.86
  5. Step 5: Solve for x
    x = 471,334,496,954.86/778,368.76
  6. Step 6: Final answer
    x = 605,541.38

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Half scale
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Double scale
Find fourth proportional to 778,369.76, 1,074,108.57 and 438,816.14
Similar ratio
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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.