Finding the Fourth Proportional to 861,555.06, 1,293,130.53 and 435,390.84
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Solution
The fourth proportional to 861,555.06, 1,293,130.53 and 435,390.84 is: 653,489.50
Step by Step Solution
- Step 1: Write the proportion equation
861,555.06 : 1,293,130.53 = 435,390.84 : x - Step 2: Convert to fraction form
861,555.06/1,293,130.53 = 435,390.84/x - Step 3: Cross multiply
861,555.06x = 1,293,130.53 × 435,390.84 - Step 4: Simplify right side
861,555.06x = 563,017,187,686.35 - Step 5: Solve for x
x = 563,017,187,686.35/861,555.06 - Step 6: Final answer
x = 653,489.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.