Finding the Fourth Proportional to 939,967,341.95, 1,297,186,032.05 and 516,596,009.97
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Solution
The fourth proportional to 939,967,341.95, 1,297,186,032.05 and 516,596,009.97 is: 712,919,586.07
Step by Step Solution
- Step 1: Write the proportion equation
939,967,341.95 : 1,297,186,032.05 = 516,596,009.97 : x - Step 2: Convert to fraction form
939,967,341.95/1,297,186,032.05 = 516,596,009.97/x - Step 3: Cross multiply
939,967,341.95x = 1,297,186,032.05 × 516,596,009.97 - Step 4: Simplify right side
939,967,341.95x = 670,121,128,345,680,768 - Step 5: Solve for x
x = 670,121,128,345,680,768/939,967,341.95 - Step 6: Final answer
x = 712,919,586.07
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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.