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Finding the Fourth Proportional to 551,968.40, 761,707.32 and 306,943.40

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Solution

The fourth proportional to 551,968.40, 761,707.32 and 306,943.40 is: 423,576.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,968.40 : 761,707.32 = 306,943.40 : x
  2. Step 2: Convert to fraction form
    551,968.40/761,707.32 = 306,943.40/x
  3. Step 3: Cross multiply
    551,968.40x = 761,707.32 × 306,943.40
  4. Step 4: Simplify right side
    551,968.40x = 233,801,034,605.69
  5. Step 5: Solve for x
    x = 233,801,034,605.69/551,968.40
  6. Step 6: Final answer
    x = 423,576.85

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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.