Home / 865,933,816.86-1,298,900,700.20-399,457,225.40

Finding the Fourth Proportional to 865,933,816.86, 1,298,900,700.20 and 399,457,225.40

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Solution

The fourth proportional to 865,933,816.86, 1,298,900,700.20 and 399,457,225.40 is: 599,185,826.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,933,816.86 : 1,298,900,700.20 = 399,457,225.40 : x
  2. Step 2: Convert to fraction form
    865,933,816.86/1,298,900,700.20 = 399,457,225.40/x
  3. Step 3: Cross multiply
    865,933,816.86x = 1,298,900,700.20 × 399,457,225.40
  4. Step 4: Simplify right side
    865,933,816.86x = 518,855,269,772,009,216
  5. Step 5: Solve for x
    x = 518,855,269,772,009,216/865,933,816.86
  6. Step 6: Final answer
    x = 599,185,826.53

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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.