Home / 487,763.48-673,139.78-272,890.76

Finding the Fourth Proportional to 487,763.48, 673,139.78 and 272,890.76

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Solution

The fourth proportional to 487,763.48, 673,139.78 and 272,890.76 is: 376,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,763.48 : 673,139.78 = 272,890.76 : x
  2. Step 2: Convert to fraction form
    487,763.48/673,139.78 = 272,890.76/x
  3. Step 3: Cross multiply
    487,763.48x = 673,139.78 × 272,890.76
  4. Step 4: Simplify right side
    487,763.48x = 183,693,626,150.43
  5. Step 5: Solve for x
    x = 183,693,626,150.43/487,763.48
  6. Step 6: Final answer
    x = 376,603.89

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1.5x scale

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.