Finding the Fourth Proportional to 869,252,215.60, 1,303,430,425.80 and 323,712,938.80
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Solution
The fourth proportional to 869,252,215.60, 1,303,430,425.80 and 323,712,938.80 is: 485,402,609.37
Step by Step Solution
- Step 1: Write the proportion equation
869,252,215.60 : 1,303,430,425.80 = 323,712,938.80 : x - Step 2: Convert to fraction form
869,252,215.60/1,303,430,425.80 = 323,712,938.80/x - Step 3: Cross multiply
869,252,215.60x = 1,303,430,425.80 × 323,712,938.80 - Step 4: Simplify right side
869,252,215.60x = 421,937,293,657,053,312 - Step 5: Solve for x
x = 421,937,293,657,053,312/869,252,215.60 - Step 6: Final answer
x = 485,402,609.37
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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.