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Finding the Fourth Proportional to 525,617.40, 788,426.10 and 520,087.80

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Solution

The fourth proportional to 525,617.40, 788,426.10 and 520,087.80 is: 780,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,617.40 : 788,426.10 = 520,087.80 : x
  2. Step 2: Convert to fraction form
    525,617.40/788,426.10 = 520,087.80/x
  3. Step 3: Cross multiply
    525,617.40x = 788,426.10 × 520,087.80
  4. Step 4: Simplify right side
    525,617.40x = 410,050,795,811.58
  5. Step 5: Solve for x
    x = 410,050,795,811.58/525,617.40
  6. Step 6: Final answer
    x = 780,131.70

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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.