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Finding the Fourth Proportional to 613,507.82, 920,386.14 and 258,521.66

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Solution

The fourth proportional to 613,507.82, 920,386.14 and 258,521.66 is: 387,834.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,507.82 : 920,386.14 = 258,521.66 : x
  2. Step 2: Convert to fraction form
    613,507.82/920,386.14 = 258,521.66/x
  3. Step 3: Cross multiply
    613,507.82x = 920,386.14 × 258,521.66
  4. Step 4: Simplify right side
    613,507.82x = 237,939,752,753.79
  5. Step 5: Solve for x
    x = 237,939,752,753.79/613,507.82
  6. Step 6: Final answer
    x = 387,834.91

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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.