Finding the Fourth Proportional to 420,663,612.48, 580,516,031.04 and 235,024,627.68
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Solution
The fourth proportional to 420,663,612.48, 580,516,031.04 and 235,024,627.68 is: 324,334,123.54
Step by Step Solution
- Step 1: Write the proportion equation
420,663,612.48 : 580,516,031.04 = 235,024,627.68 : x - Step 2: Convert to fraction form
420,663,612.48/580,516,031.04 = 235,024,627.68/x - Step 3: Cross multiply
420,663,612.48x = 580,516,031.04 × 235,024,627.68 - Step 4: Simplify right side
420,663,612.48x = 136,435,564,057,447,312 - Step 5: Solve for x
x = 136,435,564,057,447,312/420,663,612.48 - Step 6: Final answer
x = 324,334,123.54
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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.