Finding the Fourth Proportional to 630,420.06, 869,944.20 and 358,554.09
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Solution
The fourth proportional to 630,420.06, 869,944.20 and 358,554.09 is: 494,784.46
Step by Step Solution
- Step 1: Write the proportion equation
630,420.06 : 869,944.20 = 358,554.09 : x - Step 2: Convert to fraction form
630,420.06/869,944.20 = 358,554.09/x - Step 3: Cross multiply
630,420.06x = 869,944.20 × 358,554.09 - Step 4: Simplify right side
630,420.06x = 311,922,050,981.78 - Step 5: Solve for x
x = 311,922,050,981.78/630,420.06 - Step 6: Final answer
x = 494,784.46
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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.