Finding the Fourth Proportional to 722,636,902.62, 997,238,924.16 and 409,371,116.18
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Solution
The fourth proportional to 722,636,902.62, 997,238,924.16 and 409,371,116.18 is: 564,932,139.50
Step by Step Solution
- Step 1: Write the proportion equation
722,636,902.62 : 997,238,924.16 = 409,371,116.18 : x - Step 2: Convert to fraction form
722,636,902.62/997,238,924.16 = 409,371,116.18/x - Step 3: Cross multiply
722,636,902.62x = 997,238,924.16 × 409,371,116.18 - Step 4: Simplify right side
722,636,902.62x = 408,240,811,481,521,536 - Step 5: Solve for x
x = 408,240,811,481,521,536/722,636,902.62 - Step 6: Final answer
x = 564,932,139.50
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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.