Home / 838,885.80-1,258,328.70-277,920.30

Finding the Fourth Proportional to 838,885.80, 1,258,328.70 and 277,920.30

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Solution

The fourth proportional to 838,885.80, 1,258,328.70 and 277,920.30 is: 416,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,885.80 : 1,258,328.70 = 277,920.30 : x
  2. Step 2: Convert to fraction form
    838,885.80/1,258,328.70 = 277,920.30/x
  3. Step 3: Cross multiply
    838,885.80x = 1,258,328.70 × 277,920.30
  4. Step 4: Simplify right side
    838,885.80x = 349,715,089,802.61
  5. Step 5: Solve for x
    x = 349,715,089,802.61/838,885.80
  6. Step 6: Final answer
    x = 416,880.45

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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.