Home / 499,602,511.80-689,523,582.42-287,868,790.44

Finding the Fourth Proportional to 499,602,511.80, 689,523,582.42 and 287,868,790.44

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Solution

The fourth proportional to 499,602,511.80, 689,523,582.42 and 287,868,790.44 is: 397,300,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,602,511.80 : 689,523,582.42 = 287,868,790.44 : x
  2. Step 2: Convert to fraction form
    499,602,511.80/689,523,582.42 = 287,868,790.44/x
  3. Step 3: Cross multiply
    499,602,511.80x = 689,523,582.42 × 287,868,790.44
  4. Step 4: Simplify right side
    499,602,511.80x = 198,492,319,651,101,024
  5. Step 5: Solve for x
    x = 198,492,319,651,101,024/499,602,511.80
  6. Step 6: Final answer
    x = 397,300,483.81

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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.