Finding the Fourth Proportional to 915,013.68, 1,262,718.86 and 507,176.79
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Solution
The fourth proportional to 915,013.68, 1,262,718.86 and 507,176.79 is: 699,903.95
Step by Step Solution
- Step 1: Write the proportion equation
915,013.68 : 1,262,718.86 = 507,176.79 : x - Step 2: Convert to fraction form
915,013.68/1,262,718.86 = 507,176.79/x - Step 3: Cross multiply
915,013.68x = 1,262,718.86 × 507,176.79 - Step 4: Simplify right side
915,013.68x = 640,421,690,816.18 - Step 5: Solve for x
x = 640,421,690,816.18/915,013.68 - Step 6: Final answer
x = 699,903.95
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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.