Finding the Fourth Proportional to 739,792,419.81, 1,020,905,411.76 and 400,692,458.99
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Solution
The fourth proportional to 739,792,419.81, 1,020,905,411.76 and 400,692,458.99 is: 552,951,191.29
Step by Step Solution
- Step 1: Write the proportion equation
739,792,419.81 : 1,020,905,411.76 = 400,692,458.99 : x - Step 2: Convert to fraction form
739,792,419.81/1,020,905,411.76 = 400,692,458.99/x - Step 3: Cross multiply
739,792,419.81x = 1,020,905,411.76 × 400,692,458.99 - Step 4: Simplify right side
739,792,419.81x = 409,069,099,839,623,808 - Step 5: Solve for x
x = 409,069,099,839,623,808/739,792,419.81 - Step 6: Final answer
x = 552,951,191.29
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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.