Home / 421,539,326.52-581,785,119.10-242,888,999.12

Finding the Fourth Proportional to 421,539,326.52, 581,785,119.10 and 242,888,999.12

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Solution

The fourth proportional to 421,539,326.52, 581,785,119.10 and 242,888,999.12 is: 335,221,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,539,326.52 : 581,785,119.10 = 242,888,999.12 : x
  2. Step 2: Convert to fraction form
    421,539,326.52/581,785,119.10 = 242,888,999.12/x
  3. Step 3: Cross multiply
    421,539,326.52x = 581,785,119.10 × 242,888,999.12
  4. Step 4: Simplify right side
    421,539,326.52x = 141,309,205,279,657,968
  5. Step 5: Solve for x
    x = 141,309,205,279,657,968/421,539,326.52
  6. Step 6: Final answer
    x = 335,221,879.41

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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.