Home / 689,346.10-1,034,861.55-390,034.90

Finding the Fourth Proportional to 689,346.10, 1,034,861.55 and 390,034.90

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Solution

The fourth proportional to 689,346.10, 1,034,861.55 and 390,034.90 is: 585,528.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,346.10 : 1,034,861.55 = 390,034.90 : x
  2. Step 2: Convert to fraction form
    689,346.10/1,034,861.55 = 390,034.90/x
  3. Step 3: Cross multiply
    689,346.10x = 1,034,861.55 × 390,034.90
  4. Step 4: Simplify right side
    689,346.10x = 403,632,121,168.10
  5. Step 5: Solve for x
    x = 403,632,121,168.10/689,346.10
  6. Step 6: Final answer
    x = 585,528.98

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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.