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Finding the Fourth Proportional to 535,580.40, 801,815.40 and 520,028.40

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Solution

The fourth proportional to 535,580.40, 801,815.40 and 520,028.40 is: 778,532.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,580.40 : 801,815.40 = 520,028.40 : x
  2. Step 2: Convert to fraction form
    535,580.40/801,815.40 = 520,028.40/x
  3. Step 3: Cross multiply
    535,580.40x = 801,815.40 × 520,028.40
  4. Step 4: Simplify right side
    535,580.40x = 416,966,779,557.36
  5. Step 5: Solve for x
    x = 416,966,779,557.36/535,580.40
  6. Step 6: Final answer
    x = 778,532.56

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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.