Finding the Fourth Proportional to 1,010,989,721.70, 1,516,484,582.55 and 972,247,672.80
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Solution
The fourth proportional to 1,010,989,721.70, 1,516,484,582.55 and 972,247,672.80 is: 1,458,371,509.20
Step by Step Solution
- Step 1: Write the proportion equation
1,010,989,721.70 : 1,516,484,582.55 = 972,247,672.80 : x - Step 2: Convert to fraction form
1,010,989,721.70/1,516,484,582.55 = 972,247,672.80/x - Step 3: Cross multiply
1,010,989,721.70x = 1,516,484,582.55 × 972,247,672.80 - Step 4: Simplify right side
1,010,989,721.70x = 1,474,398,606,221,316,864 - Step 5: Solve for x
x = 1,474,398,606,221,316,864/1,010,989,721.70 - Step 6: Final answer
x = 1,458,371,509.20
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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.