Finding the Fourth Proportional to 905,636.19, 1,249,751.58 and 518,438.54
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Solution
The fourth proportional to 905,636.19, 1,249,751.58 and 518,438.54 is: 715,430.09
Step by Step Solution
- Step 1: Write the proportion equation
905,636.19 : 1,249,751.58 = 518,438.54 : x - Step 2: Convert to fraction form
905,636.19/1,249,751.58 = 518,438.54/x - Step 3: Cross multiply
905,636.19x = 1,249,751.58 × 518,438.54 - Step 4: Simplify right side
905,636.19x = 647,919,381,373.51 - Step 5: Solve for x
x = 647,919,381,373.51/905,636.19 - Step 6: Final answer
x = 715,430.09
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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.