Finding the Fourth Proportional to 1,021,584,936.51, 1,409,787,204.07 and 551,686,215.95
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Solution
The fourth proportional to 1,021,584,936.51, 1,409,787,204.07 and 551,686,215.95 is: 761,326,973.52
Step by Step Solution
- Step 1: Write the proportion equation
1,021,584,936.51 : 1,409,787,204.07 = 551,686,215.95 : x - Step 2: Convert to fraction form
1,021,584,936.51/1,409,787,204.07 = 551,686,215.95/x - Step 3: Cross multiply
1,021,584,936.51x = 1,409,787,204.07 × 551,686,215.95 - Step 4: Simplify right side
1,021,584,936.51x = 777,760,167,908,108,800 - Step 5: Solve for x
x = 777,760,167,908,108,800/1,021,584,936.51 - Step 6: Final answer
x = 761,326,973.52
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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.