Home / 1,398,768,189.84-1,931,171,247.36-890,417,733.12

Finding the Fourth Proportional to 1,398,768,189.84, 1,931,171,247.36 and 890,417,733.12

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Solution

The fourth proportional to 1,398,768,189.84, 1,931,171,247.36 and 890,417,733.12 is: 1,229,331,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,189.84 : 1,931,171,247.36 = 890,417,733.12 : x
  2. Step 2: Convert to fraction form
    1,398,768,189.84/1,931,171,247.36 = 890,417,733.12/x
  3. Step 3: Cross multiply
    1,398,768,189.84x = 1,931,171,247.36 × 890,417,733.12
  4. Step 4: Simplify right side
    1,398,768,189.84x = 1,719,549,124,340,813,824
  5. Step 5: Solve for x
    x = 1,719,549,124,340,813,824/1,398,768,189.84
  6. Step 6: Final answer
    x = 1,229,331,019.13

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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.