Home / 830,018.70-1,245,028.05-515,090.70

Finding the Fourth Proportional to 830,018.70, 1,245,028.05 and 515,090.70

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Solution

The fourth proportional to 830,018.70, 1,245,028.05 and 515,090.70 is: 772,636.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,018.70 : 1,245,028.05 = 515,090.70 : x
  2. Step 2: Convert to fraction form
    830,018.70/1,245,028.05 = 515,090.70/x
  3. Step 3: Cross multiply
    830,018.70x = 1,245,028.05 × 515,090.70
  4. Step 4: Simplify right side
    830,018.70x = 641,302,369,794.14
  5. Step 5: Solve for x
    x = 641,302,369,794.14/830,018.70
  6. Step 6: Final answer
    x = 772,636.05

Related Problems

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Half scale
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Double scale
Find fourth proportional to 830,019.70, 1,245,029.55 and 515,091.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.