Home / 1,292,030.80-1,938,459.30-393,643.60

Finding the Fourth Proportional to 1,292,030.80, 1,938,459.30 and 393,643.60

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Solution

The fourth proportional to 1,292,030.80, 1,938,459.30 and 393,643.60 is: 590,591.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,030.80 : 1,938,459.30 = 393,643.60 : x
  2. Step 2: Convert to fraction form
    1,292,030.80/1,938,459.30 = 393,643.60/x
  3. Step 3: Cross multiply
    1,292,030.80x = 1,938,459.30 × 393,643.60
  4. Step 4: Simplify right side
    1,292,030.80x = 763,062,097,305.48
  5. Step 5: Solve for x
    x = 763,062,097,305.48/1,292,030.80
  6. Step 6: Final answer
    x = 590,591.26

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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.