Finding the Fourth Proportional to 611,871.70, 917,807.55 and 471,903.70
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Solution
The fourth proportional to 611,871.70, 917,807.55 and 471,903.70 is: 707,855.55
Step by Step Solution
- Step 1: Write the proportion equation
611,871.70 : 917,807.55 = 471,903.70 : x - Step 2: Convert to fraction form
611,871.70/917,807.55 = 471,903.70/x - Step 3: Cross multiply
611,871.70x = 917,807.55 × 471,903.70 - Step 4: Simplify right side
611,871.70x = 433,116,778,732.94 - Step 5: Solve for x
x = 433,116,778,732.94/611,871.70 - Step 6: Final answer
x = 707,855.55
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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.