Finding the Fourth Proportional to 870,316.74, 1,299,518.91 and 779,774.94
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Solution
The fourth proportional to 870,316.74, 1,299,518.91 and 779,774.94 is: 1,164,325.85
Step by Step Solution
- Step 1: Write the proportion equation
870,316.74 : 1,299,518.91 = 779,774.94 : x - Step 2: Convert to fraction form
870,316.74/1,299,518.91 = 779,774.94/x - Step 3: Cross multiply
870,316.74x = 1,299,518.91 × 779,774.94 - Step 4: Simplify right side
870,316.74x = 1,013,332,280,074.12 - Step 5: Solve for x
x = 1,013,332,280,074.12/870,316.74 - Step 6: Final answer
x = 1,164,325.85
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.