Home / 7,920,882,005.10-11,881,323,007.65-6,642,394,391.40

Finding the Fourth Proportional to 7,920,882,005.10, 11,881,323,007.65 and 6,642,394,391.40

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Solution

The fourth proportional to 7,920,882,005.10, 11,881,323,007.65 and 6,642,394,391.40 is: 9,963,591,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,882,005.10 : 11,881,323,007.65 = 6,642,394,391.40 : x
  2. Step 2: Convert to fraction form
    7,920,882,005.10/11,881,323,007.65 = 6,642,394,391.40/x
  3. Step 3: Cross multiply
    7,920,882,005.10x = 11,881,323,007.65 × 6,642,394,391.40
  4. Step 4: Simplify right side
    7,920,882,005.10x = 78,920,433,308,426,125,312
  5. Step 5: Solve for x
    x = 78,920,433,308,426,125,312/7,920,882,005.10
  6. Step 6: Final answer
    x = 9,963,591,587.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.