Finding the Fourth Proportional to 495,146,999.80, 742,720,499.70 and 265,564,487.80
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Solution
The fourth proportional to 495,146,999.80, 742,720,499.70 and 265,564,487.80 is: 398,346,731.70
Step by Step Solution
- Step 1: Write the proportion equation
495,146,999.80 : 742,720,499.70 = 265,564,487.80 : x - Step 2: Convert to fraction form
495,146,999.80/742,720,499.70 = 265,564,487.80/x - Step 3: Cross multiply
495,146,999.80x = 742,720,499.70 × 265,564,487.80 - Step 4: Simplify right side
495,146,999.80x = 197,240,189,081,390,560 - Step 5: Solve for x
x = 197,240,189,081,390,560/495,146,999.80 - Step 6: Final answer
x = 398,346,731.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.