Home / 431,000,511.30-646,500,766.95-258,671,909.70

Finding the Fourth Proportional to 431,000,511.30, 646,500,766.95 and 258,671,909.70

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Solution

The fourth proportional to 431,000,511.30, 646,500,766.95 and 258,671,909.70 is: 388,007,864.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,000,511.30 : 646,500,766.95 = 258,671,909.70 : x
  2. Step 2: Convert to fraction form
    431,000,511.30/646,500,766.95 = 258,671,909.70/x
  3. Step 3: Cross multiply
    431,000,511.30x = 646,500,766.95 × 258,671,909.70
  4. Step 4: Simplify right side
    431,000,511.30x = 167,231,588,009,471,136
  5. Step 5: Solve for x
    x = 167,231,588,009,471,136/431,000,511.30
  6. Step 6: Final answer
    x = 388,007,864.55

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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.