Home / 920,196,689.64-1,269,980,400.42-518,323,665.48

Finding the Fourth Proportional to 920,196,689.64, 1,269,980,400.42 and 518,323,665.48

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Solution

The fourth proportional to 920,196,689.64, 1,269,980,400.42 and 518,323,665.48 is: 715,348,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,196,689.64 : 1,269,980,400.42 = 518,323,665.48 : x
  2. Step 2: Convert to fraction form
    920,196,689.64/1,269,980,400.42 = 518,323,665.48/x
  3. Step 3: Cross multiply
    920,196,689.64x = 1,269,980,400.42 × 518,323,665.48
  4. Step 4: Simplify right side
    920,196,689.64x = 658,260,896,233,452,544
  5. Step 5: Solve for x
    x = 658,260,896,233,452,544/920,196,689.64
  6. Step 6: Final answer
    x = 715,348,037.70

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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.