Finding the Fourth Proportional to 680,862,475.20, 1,021,293,712.80 and 405,363,460.80
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Solution
The fourth proportional to 680,862,475.20, 1,021,293,712.80 and 405,363,460.80 is: 608,045,191.20
Step by Step Solution
- Step 1: Write the proportion equation
680,862,475.20 : 1,021,293,712.80 = 405,363,460.80 : x - Step 2: Convert to fraction form
680,862,475.20/1,021,293,712.80 = 405,363,460.80/x - Step 3: Cross multiply
680,862,475.20x = 1,021,293,712.80 × 405,363,460.80 - Step 4: Simplify right side
680,862,475.20x = 413,995,153,913,889,280 - Step 5: Solve for x
x = 413,995,153,913,889,280/680,862,475.20 - Step 6: Final answer
x = 608,045,191.20
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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.