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Finding the Fourth Proportional to 580,621.40, 869,765.70 and 403,328.60

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Solution

The fourth proportional to 580,621.40, 869,765.70 and 403,328.60 is: 604,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,621.40 : 869,765.70 = 403,328.60 : x
  2. Step 2: Convert to fraction form
    580,621.40/869,765.70 = 403,328.60/x
  3. Step 3: Cross multiply
    580,621.40x = 869,765.70 × 403,328.60
  4. Step 4: Simplify right side
    580,621.40x = 350,801,382,109.02
  5. Step 5: Solve for x
    x = 350,801,382,109.02/580,621.40
  6. Step 6: Final answer
    x = 604,182.66

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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.