Home / 1,020,426.10-1,530,243.87-346,393.78

Finding the Fourth Proportional to 1,020,426.10, 1,530,243.87 and 346,393.78

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Solution

The fourth proportional to 1,020,426.10, 1,530,243.87 and 346,393.78 is: 519,456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,426.10 : 1,530,243.87 = 346,393.78 : x
  2. Step 2: Convert to fraction form
    1,020,426.10/1,530,243.87 = 346,393.78/x
  3. Step 3: Cross multiply
    1,020,426.10x = 1,530,243.87 × 346,393.78
  4. Step 4: Simplify right side
    1,020,426.10x = 530,066,958,451.13
  5. Step 5: Solve for x
    x = 530,066,958,451.13/1,020,426.10
  6. Step 6: Final answer
    x = 519,456.49

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Double scale
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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.