Finding the Fourth Proportional to 1,562,938,830.19, 2,156,916,240.89 and 858,120,518.35
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Solution
The fourth proportional to 1,562,938,830.19, 2,156,916,240.89 and 858,120,518.35 is: 1,184,239,617.65
Step by Step Solution
- Step 1: Write the proportion equation
1,562,938,830.19 : 2,156,916,240.89 = 858,120,518.35 : x - Step 2: Convert to fraction form
1,562,938,830.19/2,156,916,240.89 = 858,120,518.35/x - Step 3: Cross multiply
1,562,938,830.19x = 2,156,916,240.89 × 858,120,518.35 - Step 4: Simplify right side
1,562,938,830.19x = 1,850,894,082,670,060,288 - Step 5: Solve for x
x = 1,850,894,082,670,060,288/1,562,938,830.19 - Step 6: Final answer
x = 1,184,239,617.65
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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.