Finding the Fourth Proportional to 708,557,018.40, 976,939,974 and 582,669,280.80
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Solution
The fourth proportional to 708,557,018.40, 976,939,974 and 582,669,280.80 is: 803,369,238.12
Step by Step Solution
- Step 1: Write the proportion equation
708,557,018.40 : 976,939,974 = 582,669,280.80 : x - Step 2: Convert to fraction form
708,557,018.40/976,939,974 = 582,669,280.80/x - Step 3: Cross multiply
708,557,018.40x = 976,939,974 × 582,669,280.80 - Step 4: Simplify right side
708,557,018.40x = 569,232,912,035,350,656 - Step 5: Solve for x
x = 569,232,912,035,350,656/708,557,018.40 - Step 6: Final answer
x = 803,369,238.12
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Double scale
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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.