Finding the Fourth Proportional to 528,509.18, 729,338.96 and 286,785.60
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Solution
The fourth proportional to 528,509.18, 729,338.96 and 286,785.60 is: 395,762.12
Step by Step Solution
- Step 1: Write the proportion equation
528,509.18 : 729,338.96 = 286,785.60 : x - Step 2: Convert to fraction form
528,509.18/729,338.96 = 286,785.60/x - Step 3: Cross multiply
528,509.18x = 729,338.96 × 286,785.60 - Step 4: Simplify right side
528,509.18x = 209,163,911,246.98 - Step 5: Solve for x
x = 209,163,911,246.98/528,509.18 - Step 6: Final answer
x = 395,762.12
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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.