Home / 487,485.57-672,727.78-272,626.49

Finding the Fourth Proportional to 487,485.57, 672,727.78 and 272,626.49

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Solution

The fourth proportional to 487,485.57, 672,727.78 and 272,626.49 is: 376,223.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,485.57 : 672,727.78 = 272,626.49 : x
  2. Step 2: Convert to fraction form
    487,485.57/672,727.78 = 272,626.49/x
  3. Step 3: Cross multiply
    487,485.57x = 672,727.78 × 272,626.49
  4. Step 4: Simplify right side
    487,485.57x = 183,403,413,386.89
  5. Step 5: Solve for x
    x = 183,403,413,386.89/487,485.57
  6. Step 6: Final answer
    x = 376,223.27

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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.