Home / 724,786.80-1,000,239.28-402,498.32

Finding the Fourth Proportional to 724,786.80, 1,000,239.28 and 402,498.32

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Solution

The fourth proportional to 724,786.80, 1,000,239.28 and 402,498.32 is: 555,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,786.80 : 1,000,239.28 = 402,498.32 : x
  2. Step 2: Convert to fraction form
    724,786.80/1,000,239.28 = 402,498.32/x
  3. Step 3: Cross multiply
    724,786.80x = 1,000,239.28 × 402,498.32
  4. Step 4: Simplify right side
    724,786.80x = 402,594,629,798.01
  5. Step 5: Solve for x
    x = 402,594,629,798.01/724,786.80
  6. Step 6: Final answer
    x = 555,466.28

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Double scale
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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.