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Finding the Fourth Proportional to 525,987.60, 787,013.10 and 348,840.60

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Solution

The fourth proportional to 525,987.60, 787,013.10 and 348,840.60 is: 521,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,987.60 : 787,013.10 = 348,840.60 : x
  2. Step 2: Convert to fraction form
    525,987.60/787,013.10 = 348,840.60/x
  3. Step 3: Cross multiply
    525,987.60x = 787,013.10 × 348,840.60
  4. Step 4: Simplify right side
    525,987.60x = 274,542,122,011.86
  5. Step 5: Solve for x
    x = 274,542,122,011.86/525,987.60
  6. Step 6: Final answer
    x = 521,955.50

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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.