Finding the Fourth Proportional to 1,578,991,822.60, 2,179,236,749.70 and 909,808,750.12
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Solution
The fourth proportional to 1,578,991,822.60, 2,179,236,749.70 and 909,808,750.12 is: 1,255,667,467.74
Step by Step Solution
- Step 1: Write the proportion equation
1,578,991,822.60 : 2,179,236,749.70 = 909,808,750.12 : x - Step 2: Convert to fraction form
1,578,991,822.60/2,179,236,749.70 = 909,808,750.12/x - Step 3: Cross multiply
1,578,991,822.60x = 2,179,236,749.70 × 909,808,750.12 - Step 4: Simplify right side
1,578,991,822.60x = 1,982,688,663,460,128,000 - Step 5: Solve for x
x = 1,982,688,663,460,128,000/1,578,991,822.60 - Step 6: Final answer
x = 1,255,667,467.74
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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.