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Finding the Fourth Proportional to 525,065.40, 787,598.10 and 487,740.60

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Solution

The fourth proportional to 525,065.40, 787,598.10 and 487,740.60 is: 731,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,065.40 : 787,598.10 = 487,740.60 : x
  2. Step 2: Convert to fraction form
    525,065.40/787,598.10 = 487,740.60/x
  3. Step 3: Cross multiply
    525,065.40x = 787,598.10 × 487,740.60
  4. Step 4: Simplify right side
    525,065.40x = 384,143,569,852.86
  5. Step 5: Solve for x
    x = 384,143,569,852.86/525,065.40
  6. Step 6: Final answer
    x = 731,610.90

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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.