Finding the Fourth Proportional to 1,217,255,398.28, 1,678,946,483.48 and 1,117,107,237.40
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Solution
The fourth proportional to 1,217,255,398.28, 1,678,946,483.48 and 1,117,107,237.40 is: 1,540,813,267.74
Step by Step Solution
- Step 1: Write the proportion equation
1,217,255,398.28 : 1,678,946,483.48 = 1,117,107,237.40 : x - Step 2: Convert to fraction form
1,217,255,398.28/1,678,946,483.48 = 1,117,107,237.40/x - Step 3: Cross multiply
1,217,255,398.28x = 1,678,946,483.48 × 1,117,107,237.40 - Step 4: Simplify right side
1,217,255,398.28x = 1,875,563,267,902,787,840 - Step 5: Solve for x
x = 1,875,563,267,902,787,840/1,217,255,398.28 - Step 6: Final answer
x = 1,540,813,267.74
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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.