Finding the Fourth Proportional to 815,953,169.88, 1,126,197,116.28 and 518,537,419.26
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Solution
The fourth proportional to 815,953,169.88, 1,126,197,116.28 and 518,537,419.26 is: 715,697,135.34
Step by Step Solution
- Step 1: Write the proportion equation
815,953,169.88 : 1,126,197,116.28 = 518,537,419.26 : x - Step 2: Convert to fraction form
815,953,169.88/1,126,197,116.28 = 518,537,419.26/x - Step 3: Cross multiply
815,953,169.88x = 1,126,197,116.28 × 518,537,419.26 - Step 4: Simplify right side
815,953,169.88x = 583,975,346,253,885,312 - Step 5: Solve for x
x = 583,975,346,253,885,312/815,953,169.88 - Step 6: Final answer
x = 715,697,135.34
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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.