Finding the Fourth Proportional to 873,169,900.80, 1,309,754,851.20 and 436,537,975.20
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Solution
The fourth proportional to 873,169,900.80, 1,309,754,851.20 and 436,537,975.20 is: 654,806,962.80
Step by Step Solution
- Step 1: Write the proportion equation
873,169,900.80 : 1,309,754,851.20 = 436,537,975.20 : x - Step 2: Convert to fraction form
873,169,900.80/1,309,754,851.20 = 436,537,975.20/x - Step 3: Cross multiply
873,169,900.80x = 1,309,754,851.20 × 436,537,975.20 - Step 4: Simplify right side
873,169,900.80x = 571,757,730,751,225,280 - Step 5: Solve for x
x = 571,757,730,751,225,280/873,169,900.80 - Step 6: Final answer
x = 654,806,962.80
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Double scale
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Similar ratio
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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.