Finding the Fourth Proportional to 977,186,538.80, 1,465,779,808.20 and 880,440,657.20
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Solution
The fourth proportional to 977,186,538.80, 1,465,779,808.20 and 880,440,657.20 is: 1,320,660,985.80
Step by Step Solution
- Step 1: Write the proportion equation
977,186,538.80 : 1,465,779,808.20 = 880,440,657.20 : x - Step 2: Convert to fraction form
977,186,538.80/1,465,779,808.20 = 880,440,657.20/x - Step 3: Cross multiply
977,186,538.80x = 1,465,779,808.20 × 880,440,657.20 - Step 4: Simplify right side
977,186,538.80x = 1,290,532,137,642,098,176 - Step 5: Solve for x
x = 1,290,532,137,642,098,176/977,186,538.80 - Step 6: Final answer
x = 1,320,660,985.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.