Home / 666,942,074.68-920,078,257.70-402,539,548.36

Finding the Fourth Proportional to 666,942,074.68, 920,078,257.70 and 402,539,548.36

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Solution

The fourth proportional to 666,942,074.68, 920,078,257.70 and 402,539,548.36 is: 555,322,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,942,074.68 : 920,078,257.70 = 402,539,548.36 : x
  2. Step 2: Convert to fraction form
    666,942,074.68/920,078,257.70 = 402,539,548.36/x
  3. Step 3: Cross multiply
    666,942,074.68x = 920,078,257.70 × 402,539,548.36
  4. Step 4: Simplify right side
    666,942,074.68x = 370,367,886,310,413,696
  5. Step 5: Solve for x
    x = 370,367,886,310,413,696/666,942,074.68
  6. Step 6: Final answer
    x = 555,322,419.10

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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.