Finding the Fourth Proportional to 891,656,041.47, 1,230,337,698.32 and 515,347,671.09
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Solution
The fourth proportional to 891,656,041.47, 1,230,337,698.32 and 515,347,671.09 is: 711,094,455.70
Step by Step Solution
- Step 1: Write the proportion equation
891,656,041.47 : 1,230,337,698.32 = 515,347,671.09 : x - Step 2: Convert to fraction form
891,656,041.47/1,230,337,698.32 = 515,347,671.09/x - Step 3: Cross multiply
891,656,041.47x = 1,230,337,698.32 × 515,347,671.09 - Step 4: Simplify right side
891,656,041.47x = 634,051,667,474,714,624 - Step 5: Solve for x
x = 634,051,667,474,714,624/891,656,041.47 - Step 6: Final answer
x = 711,094,455.70
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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.