Finding the Fourth Proportional to 679,853,154.40, 1,018,436,038.80 and 372,595,400.80
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Solution
The fourth proportional to 679,853,154.40, 1,018,436,038.80 and 372,595,400.80 is: 558,156,686.65
Step by Step Solution
- Step 1: Write the proportion equation
679,853,154.40 : 1,018,436,038.80 = 372,595,400.80 : x - Step 2: Convert to fraction form
679,853,154.40/1,018,436,038.80 = 372,595,400.80/x - Step 3: Cross multiply
679,853,154.40x = 1,018,436,038.80 × 372,595,400.80 - Step 4: Simplify right side
679,853,154.40x = 379,464,584,065,850,368 - Step 5: Solve for x
x = 379,464,584,065,850,368/679,853,154.40 - Step 6: Final answer
x = 558,156,686.65
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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.