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Finding the Fourth Proportional to 526,026.40, 788,456.40 and 289,538.80

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Solution

The fourth proportional to 526,026.40, 788,456.40 and 289,538.80 is: 433,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,026.40 : 788,456.40 = 289,538.80 : x
  2. Step 2: Convert to fraction form
    526,026.40/788,456.40 = 289,538.80/x
  3. Step 3: Cross multiply
    526,026.40x = 788,456.40 × 289,538.80
  4. Step 4: Simplify right side
    526,026.40x = 228,288,719,908.32
  5. Step 5: Solve for x
    x = 228,288,719,908.32/526,026.40
  6. Step 6: Final answer
    x = 433,987.19

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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.