Home / 670,216.90-1,005,325.35-403,840.30

Finding the Fourth Proportional to 670,216.90, 1,005,325.35 and 403,840.30

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Solution

The fourth proportional to 670,216.90, 1,005,325.35 and 403,840.30 is: 605,760.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,216.90 : 1,005,325.35 = 403,840.30 : x
  2. Step 2: Convert to fraction form
    670,216.90/1,005,325.35 = 403,840.30/x
  3. Step 3: Cross multiply
    670,216.90x = 1,005,325.35 × 403,840.30
  4. Step 4: Simplify right side
    670,216.90x = 405,990,890,941.61
  5. Step 5: Solve for x
    x = 405,990,890,941.61/670,216.90
  6. Step 6: Final answer
    x = 605,760.45

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Half scale
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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.