Finding the Fourth Proportional to 1,283,219,938.80, 1,924,829,908.20 and 465,358,921.20
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Solution
The fourth proportional to 1,283,219,938.80, 1,924,829,908.20 and 465,358,921.20 is: 698,038,381.80
Step by Step Solution
- Step 1: Write the proportion equation
1,283,219,938.80 : 1,924,829,908.20 = 465,358,921.20 : x - Step 2: Convert to fraction form
1,283,219,938.80/1,924,829,908.20 = 465,358,921.20/x - Step 3: Cross multiply
1,283,219,938.80x = 1,924,829,908.20 × 465,358,921.20 - Step 4: Simplify right side
1,283,219,938.80x = 895,736,769,573,447,040 - Step 5: Solve for x
x = 895,736,769,573,447,040/1,283,219,938.80 - Step 6: Final answer
x = 698,038,381.80
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1.5x scale
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.