Home / 513,131,925.71-708,174,836.13-312,203,064.62

Finding the Fourth Proportional to 513,131,925.71, 708,174,836.13 and 312,203,064.62

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Solution

The fourth proportional to 513,131,925.71, 708,174,836.13 and 312,203,064.62 is: 430,872,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,131,925.71 : 708,174,836.13 = 312,203,064.62 : x
  2. Step 2: Convert to fraction form
    513,131,925.71/708,174,836.13 = 312,203,064.62/x
  3. Step 3: Cross multiply
    513,131,925.71x = 708,174,836.13 × 312,203,064.62
  4. Step 4: Simplify right side
    513,131,925.71x = 221,094,354,123,011,424
  5. Step 5: Solve for x
    x = 221,094,354,123,011,424/513,131,925.71
  6. Step 6: Final answer
    x = 430,872,341.10

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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.