Home / 1,398,768,127.61-1,931,171,161.46-890,417,670.66

Finding the Fourth Proportional to 1,398,768,127.61, 1,931,171,161.46 and 890,417,670.66

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Solution

The fourth proportional to 1,398,768,127.61, 1,931,171,161.46 and 890,417,670.66 is: 1,229,330,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,127.61 : 1,931,171,161.46 = 890,417,670.66 : x
  2. Step 2: Convert to fraction form
    1,398,768,127.61/1,931,171,161.46 = 890,417,670.66/x
  3. Step 3: Cross multiply
    1,398,768,127.61x = 1,931,171,161.46 × 890,417,670.66
  4. Step 4: Simplify right side
    1,398,768,127.61x = 1,719,548,927,228,527,872
  5. Step 5: Solve for x
    x = 1,719,548,927,228,527,872/1,398,768,127.61
  6. Step 6: Final answer
    x = 1,229,330,932.91

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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.