Home / 640,197,264.09-883,468,754.55-357,939,649.38

Finding the Fourth Proportional to 640,197,264.09, 883,468,754.55 and 357,939,649.38

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Solution

The fourth proportional to 640,197,264.09, 883,468,754.55 and 357,939,649.38 is: 493,954,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,197,264.09 : 883,468,754.55 = 357,939,649.38 : x
  2. Step 2: Convert to fraction form
    640,197,264.09/883,468,754.55 = 357,939,649.38/x
  3. Step 3: Cross multiply
    640,197,264.09x = 883,468,754.55 × 357,939,649.38
  4. Step 4: Simplify right side
    640,197,264.09x = 316,228,496,241,812,288
  5. Step 5: Solve for x
    x = 316,228,496,241,812,288/640,197,264.09
  6. Step 6: Final answer
    x = 493,954,776.10

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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.