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Finding the Fourth Proportional to 528,064.40, 791,513.40 and 291,576.80

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Solution

The fourth proportional to 528,064.40, 791,513.40 and 291,576.80 is: 437,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,064.40 : 791,513.40 = 291,576.80 : x
  2. Step 2: Convert to fraction form
    528,064.40/791,513.40 = 291,576.80/x
  3. Step 3: Cross multiply
    528,064.40x = 791,513.40 × 291,576.80
  4. Step 4: Simplify right side
    528,064.40x = 230,786,944,329.12
  5. Step 5: Solve for x
    x = 230,786,944,329.12/528,064.40
  6. Step 6: Final answer
    x = 437,043.18

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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.