Home / 7,920,455,929.35-11,880,683,894.03-3,988,642,834.95

Finding the Fourth Proportional to 7,920,455,929.35, 11,880,683,894.03 and 3,988,642,834.95

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Solution

The fourth proportional to 7,920,455,929.35, 11,880,683,894.03 and 3,988,642,834.95 is: 5,982,964,252.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,455,929.35 : 11,880,683,894.03 = 3,988,642,834.95 : x
  2. Step 2: Convert to fraction form
    7,920,455,929.35/11,880,683,894.03 = 3,988,642,834.95/x
  3. Step 3: Cross multiply
    7,920,455,929.35x = 11,880,683,894.03 × 3,988,642,834.95
  4. Step 4: Simplify right side
    7,920,455,929.35x = 47,387,804,688,208,674,816
  5. Step 5: Solve for x
    x = 47,387,804,688,208,674,816/7,920,455,929.35
  6. Step 6: Final answer
    x = 5,982,964,252.43

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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.