Finding the Fourth Proportional to 1,420,473,125.16, 1,960,173,841.59 and 785,356,898.49
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Solution
The fourth proportional to 1,420,473,125.16, 1,960,173,841.59 and 785,356,898.49 is: 1,083,748,802.75
Step by Step Solution
- Step 1: Write the proportion equation
1,420,473,125.16 : 1,960,173,841.59 = 785,356,898.49 : x - Step 2: Convert to fraction form
1,420,473,125.16/1,960,173,841.59 = 785,356,898.49/x - Step 3: Cross multiply
1,420,473,125.16x = 1,960,173,841.59 × 785,356,898.49 - Step 4: Simplify right side
1,420,473,125.16x = 1,539,436,048,732,350,976 - Step 5: Solve for x
x = 1,539,436,048,732,350,976/1,420,473,125.16 - Step 6: Final answer
x = 1,083,748,802.75
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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.