Home / 628,768.16-867,700.18-342,288.17

Finding the Fourth Proportional to 628,768.16, 867,700.18 and 342,288.17

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Solution

The fourth proportional to 628,768.16, 867,700.18 and 342,288.17 is: 472,357.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,768.16 : 867,700.18 = 342,288.17 : x
  2. Step 2: Convert to fraction form
    628,768.16/867,700.18 = 342,288.17/x
  3. Step 3: Cross multiply
    628,768.16x = 867,700.18 × 342,288.17
  4. Step 4: Simplify right side
    628,768.16x = 297,003,506,720.87
  5. Step 5: Solve for x
    x = 297,003,506,720.87/628,768.16
  6. Step 6: Final answer
    x = 472,357.74

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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.