Home / 1,292,416.40-1,938,697.50-393,887.45

Finding the Fourth Proportional to 1,292,416.40, 1,938,697.50 and 393,887.45

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Solution

The fourth proportional to 1,292,416.40, 1,938,697.50 and 393,887.45 is: 590,853.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,416.40 : 1,938,697.50 = 393,887.45 : x
  2. Step 2: Convert to fraction form
    1,292,416.40/1,938,697.50 = 393,887.45/x
  3. Step 3: Cross multiply
    1,292,416.40x = 1,938,697.50 × 393,887.45
  4. Step 4: Simplify right side
    1,292,416.40x = 763,628,604,902.89
  5. Step 5: Solve for x
    x = 763,628,604,902.89/1,292,416.40
  6. Step 6: Final answer
    x = 590,853.39

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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.