Finding the Fourth Proportional to 578,201,420.79, 866,249,877.06 and 516,214,142.55
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Solution
The fourth proportional to 578,201,420.79, 866,249,877.06 and 516,214,142.55 is: 773,381,768.78
Step by Step Solution
- Step 1: Write the proportion equation
578,201,420.79 : 866,249,877.06 = 516,214,142.55 : x - Step 2: Convert to fraction form
578,201,420.79/866,249,877.06 = 516,214,142.55/x - Step 3: Cross multiply
578,201,420.79x = 866,249,877.06 × 516,214,142.55 - Step 4: Simplify right side
578,201,420.79x = 447,170,437,520,570,816 - Step 5: Solve for x
x = 447,170,437,520,570,816/578,201,420.79 - Step 6: Final answer
x = 773,381,768.78
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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.