Home / 517,118,731.12-713,437,372.48-398,077,730.72

Finding the Fourth Proportional to 517,118,731.12, 713,437,372.48 and 398,077,730.72

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Solution

The fourth proportional to 517,118,731.12, 713,437,372.48 and 398,077,730.72 is: 549,203,718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,118,731.12 : 713,437,372.48 = 398,077,730.72 : x
  2. Step 2: Convert to fraction form
    517,118,731.12/713,437,372.48 = 398,077,730.72/x
  3. Step 3: Cross multiply
    517,118,731.12x = 713,437,372.48 × 398,077,730.72
  4. Step 4: Simplify right side
    517,118,731.12x = 284,003,530,247,677,792
  5. Step 5: Solve for x
    x = 284,003,530,247,677,792/517,118,731.12
  6. Step 6: Final answer
    x = 549,203,718.91

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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.