Home / 1,398,768,119.97-1,931,171,150.82-890,417,663.11

Finding the Fourth Proportional to 1,398,768,119.97, 1,931,171,150.82 and 890,417,663.11

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Solution

The fourth proportional to 1,398,768,119.97, 1,931,171,150.82 and 890,417,663.11 is: 1,229,330,922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,119.97 : 1,931,171,150.82 = 890,417,663.11 : x
  2. Step 2: Convert to fraction form
    1,398,768,119.97/1,931,171,150.82 = 890,417,663.11/x
  3. Step 3: Cross multiply
    1,398,768,119.97x = 1,931,171,150.82 × 890,417,663.11
  4. Step 4: Simplify right side
    1,398,768,119.97x = 1,719,548,903,168,937,984
  5. Step 5: Solve for x
    x = 1,719,548,903,168,937,984/1,398,768,119.97
  6. Step 6: Final answer
    x = 1,229,330,922.42

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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.