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Finding the Fourth Proportional to 618,674.45, 853,769.59 and 346,742.26

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Solution

The fourth proportional to 618,674.45, 853,769.59 and 346,742.26 is: 478,503.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,674.45 : 853,769.59 = 346,742.26 : x
  2. Step 2: Convert to fraction form
    618,674.45/853,769.59 = 346,742.26/x
  3. Step 3: Cross multiply
    618,674.45x = 853,769.59 × 346,742.26
  4. Step 4: Simplify right side
    618,674.45x = 296,037,994,154.59
  5. Step 5: Solve for x
    x = 296,037,994,154.59/618,674.45
  6. Step 6: Final answer
    x = 478,503.67

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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.