Home / 747,090-1,030,984.20-407,559.60

Finding the Fourth Proportional to 747,090, 1,030,984.20 and 407,559.60

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Solution

The fourth proportional to 747,090, 1,030,984.20 and 407,559.60 is: 562,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,090 : 1,030,984.20 = 407,559.60 : x
  2. Step 2: Convert to fraction form
    747,090/1,030,984.20 = 407,559.60/x
  3. Step 3: Cross multiply
    747,090x = 1,030,984.20 × 407,559.60
  4. Step 4: Simplify right side
    747,090x = 420,187,508,158.32
  5. Step 5: Solve for x
    x = 420,187,508,158.32/747,090
  6. Step 6: Final answer
    x = 562,432.25

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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.