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Finding the Fourth Proportional to 869,620.60, 1,200,088.80 and 525,408.67

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Solution

The fourth proportional to 869,620.60, 1,200,088.80 and 525,408.67 is: 725,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,620.60 : 1,200,088.80 = 525,408.67 : x
  2. Step 2: Convert to fraction form
    869,620.60/1,200,088.80 = 525,408.67/x
  3. Step 3: Cross multiply
    869,620.60x = 1,200,088.80 × 525,408.67
  4. Step 4: Simplify right side
    869,620.60x = 630,537,051,662.41
  5. Step 5: Solve for x
    x = 630,537,051,662.41/869,620.60
  6. Step 6: Final answer
    x = 725,071.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.