Home / 399,492,021.60-599,238,032.40-289,802,599.20

Finding the Fourth Proportional to 399,492,021.60, 599,238,032.40 and 289,802,599.20

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Solution

The fourth proportional to 399,492,021.60, 599,238,032.40 and 289,802,599.20 is: 434,703,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,492,021.60 : 599,238,032.40 = 289,802,599.20 : x
  2. Step 2: Convert to fraction form
    399,492,021.60/599,238,032.40 = 289,802,599.20/x
  3. Step 3: Cross multiply
    399,492,021.60x = 599,238,032.40 × 289,802,599.20
  4. Step 4: Simplify right side
    399,492,021.60x = 173,660,739,329,013,792
  5. Step 5: Solve for x
    x = 173,660,739,329,013,792/399,492,021.60
  6. Step 6: Final answer
    x = 434,703,898.80

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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.