Home / 724,870.53-1,000,333.70-398,197.32

Finding the Fourth Proportional to 724,870.53, 1,000,333.70 and 398,197.32

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Solution

The fourth proportional to 724,870.53, 1,000,333.70 and 398,197.32 is: 549,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,870.53 : 1,000,333.70 = 398,197.32 : x
  2. Step 2: Convert to fraction form
    724,870.53/1,000,333.70 = 398,197.32/x
  3. Step 3: Cross multiply
    724,870.53x = 1,000,333.70 × 398,197.32
  4. Step 4: Simplify right side
    724,870.53x = 398,330,198,445.68
  5. Step 5: Solve for x
    x = 398,330,198,445.68/724,870.53
  6. Step 6: Final answer
    x = 549,519.10

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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.