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Finding the Fourth Proportional to 525,007.20, 787,510.80 and 288,811.20

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Solution

The fourth proportional to 525,007.20, 787,510.80 and 288,811.20 is: 433,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,007.20 : 787,510.80 = 288,811.20 : x
  2. Step 2: Convert to fraction form
    525,007.20/787,510.80 = 288,811.20/x
  3. Step 3: Cross multiply
    525,007.20x = 787,510.80 × 288,811.20
  4. Step 4: Simplify right side
    525,007.20x = 227,441,939,160.96
  5. Step 5: Solve for x
    x = 227,441,939,160.96/525,007.20
  6. Step 6: Final answer
    x = 433,216.80

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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.