Home / 989,490,463.92-1,483,906,104.05-399,128,228.46

Finding the Fourth Proportional to 989,490,463.92, 1,483,906,104.05 and 399,128,228.46

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Solution

The fourth proportional to 989,490,463.92, 1,483,906,104.05 and 399,128,228.46 is: 598,559,396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,490,463.92 : 1,483,906,104.05 = 399,128,228.46 : x
  2. Step 2: Convert to fraction form
    989,490,463.92/1,483,906,104.05 = 399,128,228.46/x
  3. Step 3: Cross multiply
    989,490,463.92x = 1,483,906,104.05 × 399,128,228.46
  4. Step 4: Simplify right side
    989,490,463.92x = 592,268,814,508,461,312
  5. Step 5: Solve for x
    x = 592,268,814,508,461,312/989,490,463.92
  6. Step 6: Final answer
    x = 598,559,396.08

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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.