Finding the Fourth Proportional to 774,658.49, 1,069,155.49 and 645,391.98
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Solution
The fourth proportional to 774,658.49, 1,069,155.49 and 645,391.98 is: 890,746.55
Step by Step Solution
- Step 1: Write the proportion equation
774,658.49 : 1,069,155.49 = 645,391.98 : x - Step 2: Convert to fraction form
774,658.49/1,069,155.49 = 645,391.98/x - Step 3: Cross multiply
774,658.49x = 1,069,155.49 × 645,391.98 - Step 4: Simplify right side
774,658.49x = 690,024,374,332.60 - Step 5: Solve for x
x = 690,024,374,332.60/774,658.49 - Step 6: Final answer
x = 890,746.55
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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.