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Finding the Fourth Proportional to 524,802.30, 786,037.05 and 431,490.30

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Solution

The fourth proportional to 524,802.30, 786,037.05 and 431,490.30 is: 646,276.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,802.30 : 786,037.05 = 431,490.30 : x
  2. Step 2: Convert to fraction form
    524,802.30/786,037.05 = 431,490.30/x
  3. Step 3: Cross multiply
    524,802.30x = 786,037.05 × 431,490.30
  4. Step 4: Simplify right side
    524,802.30x = 339,167,362,515.62
  5. Step 5: Solve for x
    x = 339,167,362,515.62/524,802.30
  6. Step 6: Final answer
    x = 646,276.44

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1.5x scale

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.