Home / 841,554.36-1,262,058.90-280,438.20

Finding the Fourth Proportional to 841,554.36, 1,262,058.90 and 280,438.20

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Solution

The fourth proportional to 841,554.36, 1,262,058.90 and 280,438.20 is: 420,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,554.36 : 1,262,058.90 = 280,438.20 : x
  2. Step 2: Convert to fraction form
    841,554.36/1,262,058.90 = 280,438.20/x
  3. Step 3: Cross multiply
    841,554.36x = 1,262,058.90 × 280,438.20
  4. Step 4: Simplify right side
    841,554.36x = 353,929,526,209.98
  5. Step 5: Solve for x
    x = 353,929,526,209.98/841,554.36
  6. Step 6: Final answer
    x = 420,566.45

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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.