Finding the Fourth Proportional to 836,798.18, 1,155,337.58 and 642,860.46
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Solution
The fourth proportional to 836,798.18, 1,155,337.58 and 642,860.46 is: 887,574.65
Step by Step Solution
- Step 1: Write the proportion equation
836,798.18 : 1,155,337.58 = 642,860.46 : x - Step 2: Convert to fraction form
836,798.18/1,155,337.58 = 642,860.46/x - Step 3: Cross multiply
836,798.18x = 1,155,337.58 × 642,860.46 - Step 4: Simplify right side
836,798.18x = 742,720,849,741.24 - Step 5: Solve for x
x = 742,720,849,741.24/836,798.18 - Step 6: Final answer
x = 887,574.65
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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.