Finding the Fourth Proportional to 886,417,352.10, 1,329,626,028.15 and 814,991,681.70
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Solution
The fourth proportional to 886,417,352.10, 1,329,626,028.15 and 814,991,681.70 is: 1,222,487,522.55
Step by Step Solution
- Step 1: Write the proportion equation
886,417,352.10 : 1,329,626,028.15 = 814,991,681.70 : x - Step 2: Convert to fraction form
886,417,352.10/1,329,626,028.15 = 814,991,681.70/x - Step 3: Cross multiply
886,417,352.10x = 1,329,626,028.15 × 814,991,681.70 - Step 4: Simplify right side
886,417,352.10x = 1,083,634,152,714,060,160 - Step 5: Solve for x
x = 1,083,634,152,714,060,160/886,417,352.10 - Step 6: Final answer
x = 1,222,487,522.55
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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.