Home / 690,869.39-953,385.39-384,944.54

Finding the Fourth Proportional to 690,869.39, 953,385.39 and 384,944.54

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Solution

The fourth proportional to 690,869.39, 953,385.39 and 384,944.54 is: 531,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,869.39 : 953,385.39 = 384,944.54 : x
  2. Step 2: Convert to fraction form
    690,869.39/953,385.39 = 384,944.54/x
  3. Step 3: Cross multiply
    690,869.39x = 953,385.39 × 384,944.54
  4. Step 4: Simplify right side
    690,869.39x = 367,000,495,629.34
  5. Step 5: Solve for x
    x = 367,000,495,629.34/690,869.39
  6. Step 6: Final answer
    x = 531,215.46

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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.