Home / 681,064.76-939,935.69-508,683.44

Finding the Fourth Proportional to 681,064.76, 939,935.69 and 508,683.44

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Solution

The fourth proportional to 681,064.76, 939,935.69 and 508,683.44 is: 702,032.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,064.76 : 939,935.69 = 508,683.44 : x
  2. Step 2: Convert to fraction form
    681,064.76/939,935.69 = 508,683.44/x
  3. Step 3: Cross multiply
    681,064.76x = 939,935.69 × 508,683.44
  4. Step 4: Simplify right side
    681,064.76x = 478,129,724,743.30
  5. Step 5: Solve for x
    x = 478,129,724,743.30/681,064.76
  6. Step 6: Final answer
    x = 702,032.69

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Half scale
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Double scale
Find fourth proportional to 681,065.76, 939,937.07 and 508,684.44
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.