Finding the Fourth Proportional to 979,873,130.84, 1,351,316,615.12 and 715,135,789.40
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Solution
The fourth proportional to 979,873,130.84, 1,351,316,615.12 and 715,135,789.40 is: 986,224,485.46
Step by Step Solution
- Step 1: Write the proportion equation
979,873,130.84 : 1,351,316,615.12 = 715,135,789.40 : x - Step 2: Convert to fraction form
979,873,130.84/1,351,316,615.12 = 715,135,789.40/x - Step 3: Cross multiply
979,873,130.84x = 1,351,316,615.12 × 715,135,789.40 - Step 4: Simplify right side
979,873,130.84x = 966,374,874,272,844,928 - Step 5: Solve for x
x = 966,374,874,272,844,928/979,873,130.84 - Step 6: Final answer
x = 986,224,485.46
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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.