Finding the Fourth Proportional to 1,392,221,000,163.90, 1,921,265,072,616.20 and 774,910,470,417.40
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Solution
The fourth proportional to 1,392,221,000,163.90, 1,921,265,072,616.20 and 774,910,470,417.40 is: 1,069,376,500,600.31
Step by Step Solution
- Step 1: Write the proportion equation
1,392,221,000,163.90 : 1,921,265,072,616.20 = 774,910,470,417.40 : x - Step 2: Convert to fraction form
1,392,221,000,163.90/1,921,265,072,616.20 = 774,910,470,417.40/x - Step 3: Cross multiply
1,392,221,000,163.90x = 1,921,265,072,616.20 × 774,910,470,417.40 - Step 4: Simplify right side
1,392,221,000,163.90x = 1,488,808,421,217,539,824,025,600 - Step 5: Solve for x
x = 1,488,808,421,217,539,824,025,600/1,392,221,000,163.90 - Step 6: Final answer
x = 1,069,376,500,600.31
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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.