Finding the Fourth Proportional to 1,186,853,970.84, 1,637,956,530.41 and 658,388,340.60
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Solution
The fourth proportional to 1,186,853,970.84, 1,637,956,530.41 and 658,388,340.60 is: 908,630,302.06
Step by Step Solution
- Step 1: Write the proportion equation
1,186,853,970.84 : 1,637,956,530.41 = 658,388,340.60 : x - Step 2: Convert to fraction form
1,186,853,970.84/1,637,956,530.41 = 658,388,340.60/x - Step 3: Cross multiply
1,186,853,970.84x = 1,637,956,530.41 × 658,388,340.60 - Step 4: Simplify right side
1,186,853,970.84x = 1,078,411,482,028,281,472 - Step 5: Solve for x
x = 1,078,411,482,028,281,472/1,186,853,970.84 - Step 6: Final answer
x = 908,630,302.06
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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.