Home / 478,396,085.40-717,556,803.30-187,206,658.20

Finding the Fourth Proportional to 478,396,085.40, 717,556,803.30 and 187,206,658.20

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Solution

The fourth proportional to 478,396,085.40, 717,556,803.30 and 187,206,658.20 is: 280,795,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,396,085.40 : 717,556,803.30 = 187,206,658.20 : x
  2. Step 2: Convert to fraction form
    478,396,085.40/717,556,803.30 = 187,206,658.20/x
  3. Step 3: Cross multiply
    478,396,085.40x = 717,556,803.30 × 187,206,658.20
  4. Step 4: Simplify right side
    478,396,085.40x = 134,331,411,214,467,712
  5. Step 5: Solve for x
    x = 134,331,411,214,467,712/478,396,085.40
  6. Step 6: Final answer
    x = 280,795,381.30

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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.