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Finding the Fourth Proportional to 526,628.80, 788,776.80 and 433,316.80

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Solution

The fourth proportional to 526,628.80, 788,776.80 and 433,316.80 is: 649,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,628.80 : 788,776.80 = 433,316.80 : x
  2. Step 2: Convert to fraction form
    526,628.80/788,776.80 = 433,316.80/x
  3. Step 3: Cross multiply
    526,628.80x = 788,776.80 × 433,316.80
  4. Step 4: Simplify right side
    526,628.80x = 341,790,238,890.24
  5. Step 5: Solve for x
    x = 341,790,238,890.24/526,628.80
  6. Step 6: Final answer
    x = 649,015.47

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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.