Home / 605,315.91-835,136.01-390,598.68

Finding the Fourth Proportional to 605,315.91, 835,136.01 and 390,598.68

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Solution

The fourth proportional to 605,315.91, 835,136.01 and 390,598.68 is: 538,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,315.91 : 835,136.01 = 390,598.68 : x
  2. Step 2: Convert to fraction form
    605,315.91/835,136.01 = 390,598.68/x
  3. Step 3: Cross multiply
    605,315.91x = 835,136.01 × 390,598.68
  4. Step 4: Simplify right side
    605,315.91x = 326,203,023,126.47
  5. Step 5: Solve for x
    x = 326,203,023,126.47/605,315.91
  6. Step 6: Final answer
    x = 538,897.16

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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.