Finding the Fourth Proportional to 690,645.51, 953,237.84 and 464,159.79
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Solution
The fourth proportional to 690,645.51, 953,237.84 and 464,159.79 is: 640,639.32
Step by Step Solution
- Step 1: Write the proportion equation
690,645.51 : 953,237.84 = 464,159.79 : x - Step 2: Convert to fraction form
690,645.51/953,237.84 = 464,159.79/x - Step 3: Cross multiply
690,645.51x = 953,237.84 × 464,159.79 - Step 4: Simplify right side
690,645.51x = 442,454,673,313.66 - Step 5: Solve for x
x = 442,454,673,313.66/690,645.51 - Step 6: Final answer
x = 640,639.32
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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.