Home / 874,897.70-1,312,346.55-313,859.30

Finding the Fourth Proportional to 874,897.70, 1,312,346.55 and 313,859.30

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Solution

The fourth proportional to 874,897.70, 1,312,346.55 and 313,859.30 is: 470,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,897.70 : 1,312,346.55 = 313,859.30 : x
  2. Step 2: Convert to fraction form
    874,897.70/1,312,346.55 = 313,859.30/x
  3. Step 3: Cross multiply
    874,897.70x = 1,312,346.55 × 313,859.30
  4. Step 4: Simplify right side
    874,897.70x = 411,892,169,540.42
  5. Step 5: Solve for x
    x = 411,892,169,540.42/874,897.70
  6. Step 6: Final answer
    x = 470,788.95

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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.