Finding the Fourth Proportional to 630,227.79, 869,638.68 and 358,296.21
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Solution
The fourth proportional to 630,227.79, 869,638.68 and 358,296.21 is: 494,405.75
Step by Step Solution
- Step 1: Write the proportion equation
630,227.79 : 869,638.68 = 358,296.21 : x - Step 2: Convert to fraction form
630,227.79/869,638.68 = 358,296.21/x - Step 3: Cross multiply
630,227.79x = 869,638.68 × 358,296.21 - Step 4: Simplify right side
630,227.79x = 311,588,243,113.40 - Step 5: Solve for x
x = 311,588,243,113.40/630,227.79 - Step 6: Final answer
x = 494,405.75
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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.