Home / 387,913,663.20-581,870,494.80-242,511,405.60

Finding the Fourth Proportional to 387,913,663.20, 581,870,494.80 and 242,511,405.60

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Solution

The fourth proportional to 387,913,663.20, 581,870,494.80 and 242,511,405.60 is: 363,767,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,913,663.20 : 581,870,494.80 = 242,511,405.60 : x
  2. Step 2: Convert to fraction form
    387,913,663.20/581,870,494.80 = 242,511,405.60/x
  3. Step 3: Cross multiply
    387,913,663.20x = 581,870,494.80 × 242,511,405.60
  4. Step 4: Simplify right side
    387,913,663.20x = 141,110,231,571,115,472
  5. Step 5: Solve for x
    x = 141,110,231,571,115,472/387,913,663.20
  6. Step 6: Final answer
    x = 363,767,108.40

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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.