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Finding the Fourth Proportional to 670,716.45, 926,419.35 and 486,659.67

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Solution

The fourth proportional to 670,716.45, 926,419.35 and 486,659.67 is: 672,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,716.45 : 926,419.35 = 486,659.67 : x
  2. Step 2: Convert to fraction form
    670,716.45/926,419.35 = 486,659.67/x
  3. Step 3: Cross multiply
    670,716.45x = 926,419.35 × 486,659.67
  4. Step 4: Simplify right side
    670,716.45x = 450,850,934,740.34
  5. Step 5: Solve for x
    x = 450,850,934,740.34/670,716.45
  6. Step 6: Final answer
    x = 672,193.05

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Double scale
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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.