Home / 647,721.09-893,898.95-375,789.11

Finding the Fourth Proportional to 647,721.09, 893,898.95 and 375,789.11

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Solution

The fourth proportional to 647,721.09, 893,898.95 and 375,789.11 is: 518,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,721.09 : 893,898.95 = 375,789.11 : x
  2. Step 2: Convert to fraction form
    647,721.09/893,898.95 = 375,789.11/x
  3. Step 3: Cross multiply
    647,721.09x = 893,898.95 × 375,789.11
  4. Step 4: Simplify right side
    647,721.09x = 335,917,484,501.99
  5. Step 5: Solve for x
    x = 335,917,484,501.99/647,721.09
  6. Step 6: Final answer
    x = 518,614.40

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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.