Home / 513,143,887.28-708,215,237.88-403,957,235.12

Finding the Fourth Proportional to 513,143,887.28, 708,215,237.88 and 403,957,235.12

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Solution

The fourth proportional to 513,143,887.28, 708,215,237.88 and 403,957,235.12 is: 557,521,343.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,143,887.28 : 708,215,237.88 = 403,957,235.12 : x
  2. Step 2: Convert to fraction form
    513,143,887.28/708,215,237.88 = 403,957,235.12/x
  3. Step 3: Cross multiply
    513,143,887.28x = 708,215,237.88 × 403,957,235.12
  4. Step 4: Simplify right side
    513,143,887.28x = 286,088,669,363,857,888
  5. Step 5: Solve for x
    x = 286,088,669,363,857,888/513,143,887.28
  6. Step 6: Final answer
    x = 557,521,343.34

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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.