Home / 399,376,713.60-599,065,070.40-289,687,291.20

Finding the Fourth Proportional to 399,376,713.60, 599,065,070.40 and 289,687,291.20

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Solution

The fourth proportional to 399,376,713.60, 599,065,070.40 and 289,687,291.20 is: 434,530,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,376,713.60 : 599,065,070.40 = 289,687,291.20 : x
  2. Step 2: Convert to fraction form
    399,376,713.60/599,065,070.40 = 289,687,291.20/x
  3. Step 3: Cross multiply
    399,376,713.60x = 599,065,070.40 × 289,687,291.20
  4. Step 4: Simplify right side
    399,376,713.60x = 173,541,537,496,713,280
  5. Step 5: Solve for x
    x = 173,541,537,496,713,280/399,376,713.60
  6. Step 6: Final answer
    x = 434,530,936.80

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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.