Home / 628,897.20-943,345.80-313,969.20

Finding the Fourth Proportional to 628,897.20, 943,345.80 and 313,969.20

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Solution

The fourth proportional to 628,897.20, 943,345.80 and 313,969.20 is: 470,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,897.20 : 943,345.80 = 313,969.20 : x
  2. Step 2: Convert to fraction form
    628,897.20/943,345.80 = 313,969.20/x
  3. Step 3: Cross multiply
    628,897.20x = 943,345.80 × 313,969.20
  4. Step 4: Simplify right side
    628,897.20x = 296,181,526,149.36
  5. Step 5: Solve for x
    x = 296,181,526,149.36/628,897.20
  6. Step 6: Final answer
    x = 470,953.80

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Double scale
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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.