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Finding the Fourth Proportional to 525,267.40, 788,775.90 and 288,779.80

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Solution

The fourth proportional to 525,267.40, 788,775.90 and 288,779.80 is: 433,650.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,267.40 : 788,775.90 = 288,779.80 : x
  2. Step 2: Convert to fraction form
    525,267.40/788,775.90 = 288,779.80/x
  3. Step 3: Cross multiply
    525,267.40x = 788,775.90 × 288,779.80
  4. Step 4: Simplify right side
    525,267.40x = 227,782,546,646.82
  5. Step 5: Solve for x
    x = 227,782,546,646.82/525,267.40
  6. Step 6: Final answer
    x = 433,650.64

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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.