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Finding the Fourth Proportional to 567,999.21, 783,838.86 and 313,350.40

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Solution

The fourth proportional to 567,999.21, 783,838.86 and 313,350.40 is: 432,423.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,999.21 : 783,838.86 = 313,350.40 : x
  2. Step 2: Convert to fraction form
    567,999.21/783,838.86 = 313,350.40/x
  3. Step 3: Cross multiply
    567,999.21x = 783,838.86 × 313,350.40
  4. Step 4: Simplify right side
    567,999.21x = 245,616,220,316.54
  5. Step 5: Solve for x
    x = 245,616,220,316.54/567,999.21
  6. Step 6: Final answer
    x = 432,423.52

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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.