Finding the Fourth Proportional to 1,247,031,920.84, 1,720,834,030.86 and 682,515,648.14
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Solution
The fourth proportional to 1,247,031,920.84, 1,720,834,030.86 and 682,515,648.14 is: 941,833,271.70
Step by Step Solution
- Step 1: Write the proportion equation
1,247,031,920.84 : 1,720,834,030.86 = 682,515,648.14 : x - Step 2: Convert to fraction form
1,247,031,920.84/1,720,834,030.86 = 682,515,648.14/x - Step 3: Cross multiply
1,247,031,920.84x = 1,720,834,030.86 × 682,515,648.14 - Step 4: Simplify right side
1,247,031,920.84x = 1,174,496,153,913,781,504 - Step 5: Solve for x
x = 1,174,496,153,913,781,504/1,247,031,920.84 - Step 6: Final answer
x = 941,833,271.70
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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.