Home / 487,276.56-672,455.60-272,417.20

Finding the Fourth Proportional to 487,276.56, 672,455.60 and 272,417.20

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Solution

The fourth proportional to 487,276.56, 672,455.60 and 272,417.20 is: 375,943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,276.56 : 672,455.60 = 272,417.20 : x
  2. Step 2: Convert to fraction form
    487,276.56/672,455.60 = 272,417.20/x
  3. Step 3: Cross multiply
    487,276.56x = 672,455.60 × 272,417.20
  4. Step 4: Simplify right side
    487,276.56x = 183,188,471,676.32
  5. Step 5: Solve for x
    x = 183,188,471,676.32/487,276.56
  6. Step 6: Final answer
    x = 375,943.53

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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.