Finding the Fourth Proportional to 571,011.68, 787,963.20 and 316,347.68
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Solution
The fourth proportional to 571,011.68, 787,963.20 and 316,347.68 is: 436,541.56
Step by Step Solution
- Step 1: Write the proportion equation
571,011.68 : 787,963.20 = 316,347.68 : x - Step 2: Convert to fraction form
571,011.68/787,963.20 = 316,347.68/x - Step 3: Cross multiply
571,011.68x = 787,963.20 × 316,347.68 - Step 4: Simplify right side
571,011.68x = 249,270,330,245.38 - Step 5: Solve for x
x = 249,270,330,245.38/571,011.68 - Step 6: Final answer
x = 436,541.56
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1.5x scale
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.