Finding the Fourth Proportional to 652,860,772.80, 979,291,159.20 and 615,447,326.40
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Solution
The fourth proportional to 652,860,772.80, 979,291,159.20 and 615,447,326.40 is: 923,170,989.60
Step by Step Solution
- Step 1: Write the proportion equation
652,860,772.80 : 979,291,159.20 = 615,447,326.40 : x - Step 2: Convert to fraction form
652,860,772.80/979,291,159.20 = 615,447,326.40/x - Step 3: Cross multiply
652,860,772.80x = 979,291,159.20 × 615,447,326.40 - Step 4: Simplify right side
652,860,772.80x = 602,702,125,696,796,800 - Step 5: Solve for x
x = 602,702,125,696,796,800/652,860,772.80 - Step 6: Final answer
x = 923,170,989.60
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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.