Home / 890,603.90-1,335,905.85-259,538.30

Finding the Fourth Proportional to 890,603.90, 1,335,905.85 and 259,538.30

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Solution

The fourth proportional to 890,603.90, 1,335,905.85 and 259,538.30 is: 389,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,603.90 : 1,335,905.85 = 259,538.30 : x
  2. Step 2: Convert to fraction form
    890,603.90/1,335,905.85 = 259,538.30/x
  3. Step 3: Cross multiply
    890,603.90x = 1,335,905.85 × 259,538.30
  4. Step 4: Simplify right side
    890,603.90x = 346,718,733,269.06
  5. Step 5: Solve for x
    x = 346,718,733,269.06/890,603.90
  6. Step 6: Final answer
    x = 389,307.45

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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.