Finding the Fourth Proportional to 977,160,779.33, 1,348,032,473.21 and 865,765,234.49
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Solution
The fourth proportional to 977,160,779.33, 1,348,032,473.21 and 865,765,234.49 is: 1,194,357,852.83
Step by Step Solution
- Step 1: Write the proportion equation
977,160,779.33 : 1,348,032,473.21 = 865,765,234.49 : x - Step 2: Convert to fraction form
977,160,779.33/1,348,032,473.21 = 865,765,234.49/x - Step 3: Cross multiply
977,160,779.33x = 1,348,032,473.21 × 865,765,234.49 - Step 4: Simplify right side
977,160,779.33x = 1,167,079,650,264,214,528 - Step 5: Solve for x
x = 1,167,079,650,264,214,528/977,160,779.33 - Step 6: Final answer
x = 1,194,357,852.83
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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.