Finding the Fourth Proportional to 509,611.80, 764,417.70 and 478,507.80
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Solution
The fourth proportional to 509,611.80, 764,417.70 and 478,507.80 is: 717,761.70
Step by Step Solution
- Step 1: Write the proportion equation
509,611.80 : 764,417.70 = 478,507.80 : x - Step 2: Convert to fraction form
509,611.80/764,417.70 = 478,507.80/x - Step 3: Cross multiply
509,611.80x = 764,417.70 × 478,507.80 - Step 4: Simplify right side
509,611.80x = 365,779,831,908.06 - Step 5: Solve for x
x = 365,779,831,908.06/509,611.80 - Step 6: Final answer
x = 717,761.70
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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.