Home / 715,904,688.12-987,834,639.46-402,578,392.24

Finding the Fourth Proportional to 715,904,688.12, 987,834,639.46 and 402,578,392.24

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Solution

The fourth proportional to 715,904,688.12, 987,834,639.46 and 402,578,392.24 is: 555,494,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,904,688.12 : 987,834,639.46 = 402,578,392.24 : x
  2. Step 2: Convert to fraction form
    715,904,688.12/987,834,639.46 = 402,578,392.24/x
  3. Step 3: Cross multiply
    715,904,688.12x = 987,834,639.46 × 402,578,392.24
  4. Step 4: Simplify right side
    715,904,688.12x = 397,680,880,952,786,880
  5. Step 5: Solve for x
    x = 397,680,880,952,786,880/715,904,688.12
  6. Step 6: Final answer
    x = 555,494,170.60

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Double scale
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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.