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Finding the Fourth Proportional to 574,340.51, 861,510.96 and 258,428.36

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Solution

The fourth proportional to 574,340.51, 861,510.96 and 258,428.36 is: 387,642.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,340.51 : 861,510.96 = 258,428.36 : x
  2. Step 2: Convert to fraction form
    574,340.51/861,510.96 = 258,428.36/x
  3. Step 3: Cross multiply
    574,340.51x = 861,510.96 × 258,428.36
  4. Step 4: Simplify right side
    574,340.51x = 222,638,860,207.27
  5. Step 5: Solve for x
    x = 222,638,860,207.27/574,340.51
  6. Step 6: Final answer
    x = 387,642.62

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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.