Home / 393,663,038.40-590,662,519.20-189,085,809.60

Finding the Fourth Proportional to 393,663,038.40, 590,662,519.20 and 189,085,809.60

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Solution

The fourth proportional to 393,663,038.40, 590,662,519.20 and 189,085,809.60 is: 283,709,390.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,663,038.40 : 590,662,519.20 = 189,085,809.60 : x
  2. Step 2: Convert to fraction form
    393,663,038.40/590,662,519.20 = 189,085,809.60/x
  3. Step 3: Cross multiply
    393,663,038.40x = 590,662,519.20 × 189,085,809.60
  4. Step 4: Simplify right side
    393,663,038.40x = 111,685,900,643,307,552
  5. Step 5: Solve for x
    x = 111,685,900,643,307,552/393,663,038.40
  6. Step 6: Final answer
    x = 283,709,390.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.