Home / 724,424.58-999,655.90-402,109.30

Finding the Fourth Proportional to 724,424.58, 999,655.90 and 402,109.30

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Solution

The fourth proportional to 724,424.58, 999,655.90 and 402,109.30 is: 554,883.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,424.58 : 999,655.90 = 402,109.30 : x
  2. Step 2: Convert to fraction form
    724,424.58/999,655.90 = 402,109.30/x
  3. Step 3: Cross multiply
    724,424.58x = 999,655.90 × 402,109.30
  4. Step 4: Simplify right side
    724,424.58x = 401,970,934,189.87
  5. Step 5: Solve for x
    x = 401,970,934,189.87/724,424.58
  6. Step 6: Final answer
    x = 554,883.07

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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.