Home / 579,712.29-868,681.63-309,878.81

Finding the Fourth Proportional to 579,712.29, 868,681.63 and 309,878.81

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Solution

The fourth proportional to 579,712.29, 868,681.63 and 309,878.81 is: 464,344.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,712.29 : 868,681.63 = 309,878.81 : x
  2. Step 2: Convert to fraction form
    579,712.29/868,681.63 = 309,878.81/x
  3. Step 3: Cross multiply
    579,712.29x = 868,681.63 × 309,878.81
  4. Step 4: Simplify right side
    579,712.29x = 269,186,029,074.76
  5. Step 5: Solve for x
    x = 269,186,029,074.76/579,712.29
  6. Step 6: Final answer
    x = 464,344.18

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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.