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Finding the Fourth Proportional to 670,486.75, 925,271.72 and 368,680.75

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Solution

The fourth proportional to 670,486.75, 925,271.72 and 368,680.75 is: 508,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,486.75 : 925,271.72 = 368,680.75 : x
  2. Step 2: Convert to fraction form
    670,486.75/925,271.72 = 368,680.75/x
  3. Step 3: Cross multiply
    670,486.75x = 925,271.72 × 368,680.75
  4. Step 4: Simplify right side
    670,486.75x = 341,129,871,683.39
  5. Step 5: Solve for x
    x = 341,129,871,683.39/670,486.75
  6. Step 6: Final answer
    x = 508,779.44

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.