Finding the Fourth Proportional to 426,492,057.20, 639,738,085.80 and 357,617,303.60
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Solution
The fourth proportional to 426,492,057.20, 639,738,085.80 and 357,617,303.60 is: 536,425,955.40
Step by Step Solution
- Step 1: Write the proportion equation
426,492,057.20 : 639,738,085.80 = 357,617,303.60 : x - Step 2: Convert to fraction form
426,492,057.20/639,738,085.80 = 357,617,303.60/x - Step 3: Cross multiply
426,492,057.20x = 639,738,085.80 × 357,617,303.60 - Step 4: Simplify right side
426,492,057.20x = 228,781,409,254,021,440 - Step 5: Solve for x
x = 228,781,409,254,021,440/426,492,057.20 - Step 6: Final answer
x = 536,425,955.40
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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.