Finding the Fourth Proportional to 970,882,522.98, 1,340,182,234.94 and 636,376,602.18
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Solution
The fourth proportional to 970,882,522.98, 1,340,182,234.94 and 636,376,602.18 is: 878,438,530.70
Step by Step Solution
- Step 1: Write the proportion equation
970,882,522.98 : 1,340,182,234.94 = 636,376,602.18 : x - Step 2: Convert to fraction form
970,882,522.98/1,340,182,234.94 = 636,376,602.18/x - Step 3: Cross multiply
970,882,522.98x = 1,340,182,234.94 × 636,376,602.18 - Step 4: Simplify right side
970,882,522.98x = 852,860,616,973,115,648 - Step 5: Solve for x
x = 852,860,616,973,115,648/970,882,522.98 - Step 6: Final answer
x = 878,438,530.70
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Double scale
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1.5x scale
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.