Home / 715,904,458.52-987,834,322.44-402,578,162.64

Finding the Fourth Proportional to 715,904,458.52, 987,834,322.44 and 402,578,162.64

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Solution

The fourth proportional to 715,904,458.52, 987,834,322.44 and 402,578,162.64 is: 555,493,853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,904,458.52 : 987,834,322.44 = 402,578,162.64 : x
  2. Step 2: Convert to fraction form
    715,904,458.52/987,834,322.44 = 402,578,162.64/x
  3. Step 3: Cross multiply
    715,904,458.52x = 987,834,322.44 × 402,578,162.64
  4. Step 4: Simplify right side
    715,904,458.52x = 397,680,526,520,624,512
  5. Step 5: Solve for x
    x = 397,680,526,520,624,512/715,904,458.52
  6. Step 6: Final answer
    x = 555,493,853.67

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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.