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Finding the Fourth Proportional to 1,375,733, 1,898,511.54 and 772,121

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Solution

The fourth proportional to 1,375,733, 1,898,511.54 and 772,121 is: 1,065,526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,733 : 1,898,511.54 = 772,121 : x
  2. Step 2: Convert to fraction form
    1,375,733/1,898,511.54 = 772,121/x
  3. Step 3: Cross multiply
    1,375,733x = 1,898,511.54 × 772,121
  4. Step 4: Simplify right side
    1,375,733x = 1,465,880,628,776.34
  5. Step 5: Solve for x
    x = 1,465,880,628,776.34/1,375,733
  6. Step 6: Final answer
    x = 1,065,526.98

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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.