Finding the Fourth Proportional to 1,564,680,420.80, 2,159,246,352.48 and 850,209,721.28
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Solution
The fourth proportional to 1,564,680,420.80, 2,159,246,352.48 and 850,209,721.28 is: 1,173,282,553.49
Step by Step Solution
- Step 1: Write the proportion equation
1,564,680,420.80 : 2,159,246,352.48 = 850,209,721.28 : x - Step 2: Convert to fraction form
1,564,680,420.80/2,159,246,352.48 = 850,209,721.28/x - Step 3: Cross multiply
1,564,680,420.80x = 2,159,246,352.48 × 850,209,721.28 - Step 4: Simplify right side
1,564,680,420.80x = 1,835,812,239,516,877,312 - Step 5: Solve for x
x = 1,835,812,239,516,877,312/1,564,680,420.80 - Step 6: Final answer
x = 1,173,282,553.49
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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.