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Finding the Fourth Proportional to 565,564.16, 780,479.04 and 310,919.68

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Solution

The fourth proportional to 565,564.16, 780,479.04 and 310,919.68 is: 429,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,564.16 : 780,479.04 = 310,919.68 : x
  2. Step 2: Convert to fraction form
    565,564.16/780,479.04 = 310,919.68/x
  3. Step 3: Cross multiply
    565,564.16x = 780,479.04 × 310,919.68
  4. Step 4: Simplify right side
    565,564.16x = 242,666,293,363.51
  5. Step 5: Solve for x
    x = 242,666,293,363.51/565,564.16
  6. Step 6: Final answer
    x = 429,069.43

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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.