Home / 513,180,636.81-708,204,218.53-290,157,530.12

Finding the Fourth Proportional to 513,180,636.81, 708,204,218.53 and 290,157,530.12

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Solution

The fourth proportional to 513,180,636.81, 708,204,218.53 and 290,157,530.12 is: 400,425,838.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,180,636.81 : 708,204,218.53 = 290,157,530.12 : x
  2. Step 2: Convert to fraction form
    513,180,636.81/708,204,218.53 = 290,157,530.12/x
  3. Step 3: Cross multiply
    513,180,636.81x = 708,204,218.53 × 290,157,530.12
  4. Step 4: Simplify right side
    513,180,636.81x = 205,490,786,870,274,656
  5. Step 5: Solve for x
    x = 205,490,786,870,274,656/513,180,636.81
  6. Step 6: Final answer
    x = 400,425,838.64

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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.