Home / 513,631,292.28-708,802,244.51-312,615,505.50

Finding the Fourth Proportional to 513,631,292.28, 708,802,244.51 and 312,615,505.50

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Solution

The fourth proportional to 513,631,292.28, 708,802,244.51 and 312,615,505.50 is: 431,403,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,631,292.28 : 708,802,244.51 = 312,615,505.50 : x
  2. Step 2: Convert to fraction form
    513,631,292.28/708,802,244.51 = 312,615,505.50/x
  3. Step 3: Cross multiply
    513,631,292.28x = 708,802,244.51 × 312,615,505.50
  4. Step 4: Simplify right side
    513,631,292.28x = 221,582,571,965,465,184
  5. Step 5: Solve for x
    x = 221,582,571,965,465,184/513,631,292.28
  6. Step 6: Final answer
    x = 431,403,957.07

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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.