Home / 649,981,311.02-896,975,947.78-352,623,553.20

Finding the Fourth Proportional to 649,981,311.02, 896,975,947.78 and 352,623,553.20

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Solution

The fourth proportional to 649,981,311.02, 896,975,947.78 and 352,623,553.20 is: 486,621,446.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,981,311.02 : 896,975,947.78 = 352,623,553.20 : x
  2. Step 2: Convert to fraction form
    649,981,311.02/896,975,947.78 = 352,623,553.20/x
  3. Step 3: Cross multiply
    649,981,311.02x = 896,975,947.78 × 352,623,553.20
  4. Step 4: Simplify right side
    649,981,311.02x = 316,294,845,841,121,216
  5. Step 5: Solve for x
    x = 316,294,845,841,121,216/649,981,311.02
  6. Step 6: Final answer
    x = 486,621,446.61

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Double scale
Find fourth proportional to 649,981,312.02, 896,975,949.16 and 352,623,554.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.