Home / 699,911,153.84-965,906,738.16-402,553,478.72

Finding the Fourth Proportional to 699,911,153.84, 965,906,738.16 and 402,553,478.72

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Solution

The fourth proportional to 699,911,153.84, 965,906,738.16 and 402,553,478.72 is: 555,540,678.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,911,153.84 : 965,906,738.16 = 402,553,478.72 : x
  2. Step 2: Convert to fraction form
    699,911,153.84/965,906,738.16 = 402,553,478.72/x
  3. Step 3: Cross multiply
    699,911,153.84x = 965,906,738.16 × 402,553,478.72
  4. Step 4: Simplify right side
    699,911,153.84x = 388,829,117,565,396,160
  5. Step 5: Solve for x
    x = 388,829,117,565,396,160/699,911,153.84
  6. Step 6: Final answer
    x = 555,540,678.89

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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.