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Finding the Fourth Proportional to 565,532.70, 780,437.70 and 310,900.29

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Solution

The fourth proportional to 565,532.70, 780,437.70 and 310,900.29 is: 429,043.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,532.70 : 780,437.70 = 310,900.29 : x
  2. Step 2: Convert to fraction form
    565,532.70/780,437.70 = 310,900.29/x
  3. Step 3: Cross multiply
    565,532.70x = 780,437.70 × 310,900.29
  4. Step 4: Simplify right side
    565,532.70x = 242,638,307,256.93
  5. Step 5: Solve for x
    x = 242,638,307,256.93/565,532.70
  6. Step 6: Final answer
    x = 429,043.82

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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.