Home / 628,501.38-867,330.30-342,021.40

Finding the Fourth Proportional to 628,501.38, 867,330.30 and 342,021.40

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Solution

The fourth proportional to 628,501.38, 867,330.30 and 342,021.40 is: 471,988.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,501.38 : 867,330.30 = 342,021.40 : x
  2. Step 2: Convert to fraction form
    628,501.38/867,330.30 = 342,021.40/x
  3. Step 3: Cross multiply
    628,501.38x = 867,330.30 × 342,021.40
  4. Step 4: Simplify right side
    628,501.38x = 296,645,523,468.42
  5. Step 5: Solve for x
    x = 296,645,523,468.42/628,501.38
  6. Step 6: Final answer
    x = 471,988.66

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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.