Home / 499,602,513.80-689,523,585.18-287,868,792.44

Finding the Fourth Proportional to 499,602,513.80, 689,523,585.18 and 287,868,792.44

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Solution

The fourth proportional to 499,602,513.80, 689,523,585.18 and 287,868,792.44 is: 397,300,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,602,513.80 : 689,523,585.18 = 287,868,792.44 : x
  2. Step 2: Convert to fraction form
    499,602,513.80/689,523,585.18 = 287,868,792.44/x
  3. Step 3: Cross multiply
    499,602,513.80x = 689,523,585.18 × 287,868,792.44
  4. Step 4: Simplify right side
    499,602,513.80x = 198,492,321,824,666,048
  5. Step 5: Solve for x
    x = 198,492,321,824,666,048/499,602,513.80
  6. Step 6: Final answer
    x = 397,300,486.57

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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.