Home / 628,921.92-867,913.29-342,443.19

Finding the Fourth Proportional to 628,921.92, 867,913.29 and 342,443.19

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Solution

The fourth proportional to 628,921.92, 867,913.29 and 342,443.19 is: 472,572.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,921.92 : 867,913.29 = 342,443.19 : x
  2. Step 2: Convert to fraction form
    628,921.92/867,913.29 = 342,443.19/x
  3. Step 3: Cross multiply
    628,921.92x = 867,913.29 × 342,443.19
  4. Step 4: Simplify right side
    628,921.92x = 297,210,995,671.00
  5. Step 5: Solve for x
    x = 297,210,995,671.00/628,921.92
  6. Step 6: Final answer
    x = 472,572.17

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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.