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Finding the Fourth Proportional to 336,992,686.80, 505,489,030.20 and 282,573,128.40

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Solution

The fourth proportional to 336,992,686.80, 505,489,030.20 and 282,573,128.40 is: 423,859,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,992,686.80 : 505,489,030.20 = 282,573,128.40 : x
  2. Step 2: Convert to fraction form
    336,992,686.80/505,489,030.20 = 282,573,128.40/x
  3. Step 3: Cross multiply
    336,992,686.80x = 505,489,030.20 × 282,573,128.40
  4. Step 4: Simplify right side
    336,992,686.80x = 142,837,616,635,496,064
  5. Step 5: Solve for x
    x = 142,837,616,635,496,064/336,992,686.80
  6. Step 6: Final answer
    x = 423,859,692.60

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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.