Finding the Fourth Proportional to 629,745,566.44, 869,363,510.50 and 391,667,490.12
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Solution
The fourth proportional to 629,745,566.44, 869,363,510.50 and 391,667,490.12 is: 540,696,818.37
Step by Step Solution
- Step 1: Write the proportion equation
629,745,566.44 : 869,363,510.50 = 391,667,490.12 : x - Step 2: Convert to fraction form
629,745,566.44/869,363,510.50 = 391,667,490.12/x - Step 3: Cross multiply
629,745,566.44x = 869,363,510.50 × 391,667,490.12 - Step 4: Simplify right side
629,745,566.44x = 340,501,424,159,447,296 - Step 5: Solve for x
x = 340,501,424,159,447,296/629,745,566.44 - Step 6: Final answer
x = 540,696,818.37
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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.