Finding the Fourth Proportional to 1,009,990.24, 1,393,785.74 and 647,413.84
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Solution
The fourth proportional to 1,009,990.24, 1,393,785.74 and 647,413.84 is: 893,430.59
Step by Step Solution
- Step 1: Write the proportion equation
1,009,990.24 : 1,393,785.74 = 647,413.84 : x - Step 2: Convert to fraction form
1,009,990.24/1,393,785.74 = 647,413.84/x - Step 3: Cross multiply
1,009,990.24x = 1,393,785.74 × 647,413.84 - Step 4: Simplify right side
1,009,990.24x = 902,356,178,070.64 - Step 5: Solve for x
x = 902,356,178,070.64/1,009,990.24 - Step 6: Final answer
x = 893,430.59
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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.