Finding the Fourth Proportional to 938,386,438.20, 1,407,579,657.30 and 248,363,443.80
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Solution
The fourth proportional to 938,386,438.20, 1,407,579,657.30 and 248,363,443.80 is: 372,545,165.70
Step by Step Solution
- Step 1: Write the proportion equation
938,386,438.20 : 1,407,579,657.30 = 248,363,443.80 : x - Step 2: Convert to fraction form
938,386,438.20/1,407,579,657.30 = 248,363,443.80/x - Step 3: Cross multiply
938,386,438.20x = 1,407,579,657.30 × 248,363,443.80 - Step 4: Simplify right side
938,386,438.20x = 349,591,331,109,851,840 - Step 5: Solve for x
x = 349,591,331,109,851,840/938,386,438.20 - Step 6: Final answer
x = 372,545,165.70
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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.