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Finding the Fourth Proportional to 528,032.40, 791,465.40 and 291,544.80

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Solution

The fourth proportional to 528,032.40, 791,465.40 and 291,544.80 is: 436,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,032.40 : 791,465.40 = 291,544.80 : x
  2. Step 2: Convert to fraction form
    528,032.40/791,465.40 = 291,544.80/x
  3. Step 3: Cross multiply
    528,032.40x = 791,465.40 × 291,544.80
  4. Step 4: Simplify right side
    528,032.40x = 230,747,621,749.92
  5. Step 5: Solve for x
    x = 230,747,621,749.92/528,032.40
  6. Step 6: Final answer
    x = 436,995.20

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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.