Home / 640,156.76-882,666.96-436,328.36

Finding the Fourth Proportional to 640,156.76, 882,666.96 and 436,328.36

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Solution

The fourth proportional to 640,156.76, 882,666.96 and 436,328.36 is: 601,622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,156.76 : 882,666.96 = 436,328.36 : x
  2. Step 2: Convert to fraction form
    640,156.76/882,666.96 = 436,328.36/x
  3. Step 3: Cross multiply
    640,156.76x = 882,666.96 × 436,328.36
  4. Step 4: Simplify right side
    640,156.76x = 385,132,627,082.99
  5. Step 5: Solve for x
    x = 385,132,627,082.99/640,156.76
  6. Step 6: Final answer
    x = 601,622.37

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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.