Finding the Fourth Proportional to 1,570,872,868.90, 2,356,309,303.35 and 696,546,135.70
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Solution
The fourth proportional to 1,570,872,868.90, 2,356,309,303.35 and 696,546,135.70 is: 1,044,819,203.55
Step by Step Solution
- Step 1: Write the proportion equation
1,570,872,868.90 : 2,356,309,303.35 = 696,546,135.70 : x - Step 2: Convert to fraction form
1,570,872,868.90/2,356,309,303.35 = 696,546,135.70/x - Step 3: Cross multiply
1,570,872,868.90x = 2,356,309,303.35 × 696,546,135.70 - Step 4: Simplify right side
1,570,872,868.90x = 1,641,278,139,762,401,536 - Step 5: Solve for x
x = 1,641,278,139,762,401,536/1,570,872,868.90 - Step 6: Final answer
x = 1,044,819,203.55
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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.