Home / 487,313.75-672,222.98-283,342.13

Finding the Fourth Proportional to 487,313.75, 672,222.98 and 283,342.13

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Solution

The fourth proportional to 487,313.75, 672,222.98 and 283,342.13 is: 390,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,313.75 : 672,222.98 = 283,342.13 : x
  2. Step 2: Convert to fraction form
    487,313.75/672,222.98 = 283,342.13/x
  3. Step 3: Cross multiply
    487,313.75x = 672,222.98 × 283,342.13
  4. Step 4: Simplify right side
    487,313.75x = 190,469,086,210.32
  5. Step 5: Solve for x
    x = 190,469,086,210.32/487,313.75
  6. Step 6: Final answer
    x = 390,855.15

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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.