Home / 320,328,000.80-480,492,001.20-289,716,999.20

Finding the Fourth Proportional to 320,328,000.80, 480,492,001.20 and 289,716,999.20

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Solution

The fourth proportional to 320,328,000.80, 480,492,001.20 and 289,716,999.20 is: 434,575,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,328,000.80 : 480,492,001.20 = 289,716,999.20 : x
  2. Step 2: Convert to fraction form
    320,328,000.80/480,492,001.20 = 289,716,999.20/x
  3. Step 3: Cross multiply
    320,328,000.80x = 480,492,001.20 × 289,716,999.20
  4. Step 4: Simplify right side
    320,328,000.80x = 139,206,700,727,266,784
  5. Step 5: Solve for x
    x = 139,206,700,727,266,784/320,328,000.80
  6. Step 6: Final answer
    x = 434,575,498.80

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1.5x scale

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.