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Finding the Fourth Proportional to 851,208,330, 1,276,866,437.34 and 359,830,020.72

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Solution

The fourth proportional to 851,208,330, 1,276,866,437.34 and 359,830,020.72 is: 539,767,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,208,330 : 1,276,866,437.34 = 359,830,020.72 : x
  2. Step 2: Convert to fraction form
    851,208,330/1,276,866,437.34 = 359,830,020.72/x
  3. Step 3: Cross multiply
    851,208,330x = 1,276,866,437.34 × 359,830,020.72
  4. Step 4: Simplify right side
    851,208,330x = 459,454,876,604,724,800
  5. Step 5: Solve for x
    x = 459,454,876,604,724,800/851,208,330
  6. Step 6: Final answer
    x = 539,767,834.04

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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.