Home / 438,056,579.40-657,084,869.10-265,727,977.80

Finding the Fourth Proportional to 438,056,579.40, 657,084,869.10 and 265,727,977.80

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Solution

The fourth proportional to 438,056,579.40, 657,084,869.10 and 265,727,977.80 is: 398,591,966.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,056,579.40 : 657,084,869.10 = 265,727,977.80 : x
  2. Step 2: Convert to fraction form
    438,056,579.40/657,084,869.10 = 265,727,977.80/x
  3. Step 3: Cross multiply
    438,056,579.40x = 657,084,869.10 × 265,727,977.80
  4. Step 4: Simplify right side
    438,056,579.40x = 174,605,833,508,920,736
  5. Step 5: Solve for x
    x = 174,605,833,508,920,736/438,056,579.40
  6. Step 6: Final answer
    x = 398,591,966.70

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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.