Home / 724,880.67-1,000,347.69-398,207.44

Finding the Fourth Proportional to 724,880.67, 1,000,347.69 and 398,207.44

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Solution

The fourth proportional to 724,880.67, 1,000,347.69 and 398,207.44 is: 549,533.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,880.67 : 1,000,347.69 = 398,207.44 : x
  2. Step 2: Convert to fraction form
    724,880.67/1,000,347.69 = 398,207.44/x
  3. Step 3: Cross multiply
    724,880.67x = 1,000,347.69 × 398,207.44
  4. Step 4: Simplify right side
    724,880.67x = 398,345,892,744.81
  5. Step 5: Solve for x
    x = 398,345,892,744.81/724,880.67
  6. Step 6: Final answer
    x = 549,533.06

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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.