Finding the Fourth Proportional to 767,248,811.66, 1,058,801,368.62 and 428,153,731.75
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Solution
The fourth proportional to 767,248,811.66, 1,058,801,368.62 and 428,153,731.75 is: 590,851,038.50
Step by Step Solution
- Step 1: Write the proportion equation
767,248,811.66 : 1,058,801,368.62 = 428,153,731.75 : x - Step 2: Convert to fraction form
767,248,811.66/1,058,801,368.62 = 428,153,731.75/x - Step 3: Cross multiply
767,248,811.66x = 1,058,801,368.62 × 428,153,731.75 - Step 4: Simplify right side
767,248,811.66x = 453,329,757,156,660,352 - Step 5: Solve for x
x = 453,329,757,156,660,352/767,248,811.66 - Step 6: Final answer
x = 590,851,038.50
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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.