Home / 872,979,965.21-1,309,457,614.34-406,380,413.81

Finding the Fourth Proportional to 872,979,965.21, 1,309,457,614.34 and 406,380,413.81

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Solution

The fourth proportional to 872,979,965.21, 1,309,457,614.34 and 406,380,413.81 is: 609,564,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,979,965.21 : 1,309,457,614.34 = 406,380,413.81 : x
  2. Step 2: Convert to fraction form
    872,979,965.21/1,309,457,614.34 = 406,380,413.81/x
  3. Step 3: Cross multiply
    872,979,965.21x = 1,309,457,614.34 × 406,380,413.81
  4. Step 4: Simplify right side
    872,979,965.21x = 532,137,927,173,565,440
  5. Step 5: Solve for x
    x = 532,137,927,173,565,440/872,979,965.21
  6. Step 6: Final answer
    x = 609,564,879.36

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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.