Finding the Fourth Proportional to 1,247,429,645.76, 1,721,177,701.26 and 738,539,671.32
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Solution
The fourth proportional to 1,247,429,645.76, 1,721,177,701.26 and 738,539,671.32 is: 1,019,021,808.64
Step by Step Solution
- Step 1: Write the proportion equation
1,247,429,645.76 : 1,721,177,701.26 = 738,539,671.32 : x - Step 2: Convert to fraction form
1,247,429,645.76/1,721,177,701.26 = 738,539,671.32/x - Step 3: Cross multiply
1,247,429,645.76x = 1,721,177,701.26 × 738,539,671.32 - Step 4: Simplify right side
1,247,429,645.76x = 1,271,158,013,771,873,536 - Step 5: Solve for x
x = 1,271,158,013,771,873,536/1,247,429,645.76 - Step 6: Final answer
x = 1,019,021,808.64
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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.