Finding the Fourth Proportional to 964,935,977.46, 1,328,249,813.49 and 840,963,520.50
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Solution
The fourth proportional to 964,935,977.46, 1,328,249,813.49 and 840,963,520.50 is: 1,157,599,742.73
Step by Step Solution
- Step 1: Write the proportion equation
964,935,977.46 : 1,328,249,813.49 = 840,963,520.50 : x - Step 2: Convert to fraction form
964,935,977.46/1,328,249,813.49 = 840,963,520.50/x - Step 3: Cross multiply
964,935,977.46x = 1,328,249,813.49 × 840,963,520.50 - Step 4: Simplify right side
964,935,977.46x = 1,117,009,639,256,018,816 - Step 5: Solve for x
x = 1,117,009,639,256,018,816/964,935,977.46 - Step 6: Final answer
x = 1,157,599,742.73
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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.