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Finding the Fourth Proportional to 411,430.20, 616,223.70 and 402,214.20

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Solution

The fourth proportional to 411,430.20, 616,223.70 and 402,214.20 is: 602,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,430.20 : 616,223.70 = 402,214.20 : x
  2. Step 2: Convert to fraction form
    411,430.20/616,223.70 = 402,214.20/x
  3. Step 3: Cross multiply
    411,430.20x = 616,223.70 × 402,214.20
  4. Step 4: Simplify right side
    411,430.20x = 247,853,922,516.54
  5. Step 5: Solve for x
    x = 247,853,922,516.54/411,430.20
  6. Step 6: Final answer
    x = 602,420.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.