Home / 666,942,087.73-920,078,275.71-402,539,561.41

Finding the Fourth Proportional to 666,942,087.73, 920,078,275.71 and 402,539,561.41

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Solution

The fourth proportional to 666,942,087.73, 920,078,275.71 and 402,539,561.41 is: 555,322,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,942,087.73 : 920,078,275.71 = 402,539,561.41 : x
  2. Step 2: Convert to fraction form
    666,942,087.73/920,078,275.71 = 402,539,561.41/x
  3. Step 3: Cross multiply
    666,942,087.73x = 920,078,275.71 × 402,539,561.41
  4. Step 4: Simplify right side
    666,942,087.73x = 370,367,905,567,172,480
  5. Step 5: Solve for x
    x = 370,367,905,567,172,480/666,942,087.73
  6. Step 6: Final answer
    x = 555,322,437.11

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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.