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Finding the Fourth Proportional to 565,557.91, 780,484.82 and 310,915.51

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Solution

The fourth proportional to 565,557.91, 780,484.82 and 310,915.51 is: 429,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,557.91 : 780,484.82 = 310,915.51 : x
  2. Step 2: Convert to fraction form
    565,557.91/780,484.82 = 310,915.51/x
  3. Step 3: Cross multiply
    565,557.91x = 780,484.82 × 310,915.51
  4. Step 4: Simplify right side
    565,557.91x = 242,664,835,857.56
  5. Step 5: Solve for x
    x = 242,664,835,857.56/565,557.91
  6. Step 6: Final answer
    x = 429,071.60

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1.5x scale

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.