Home / 740,463.12-1,021,839.84-400,930.56

Finding the Fourth Proportional to 740,463.12, 1,021,839.84 and 400,930.56

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Solution

The fourth proportional to 740,463.12, 1,021,839.84 and 400,930.56 is: 553,284.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,463.12 : 1,021,839.84 = 400,930.56 : x
  2. Step 2: Convert to fraction form
    740,463.12/1,021,839.84 = 400,930.56/x
  3. Step 3: Cross multiply
    740,463.12x = 1,021,839.84 × 400,930.56
  4. Step 4: Simplify right side
    740,463.12x = 409,686,819,281.51
  5. Step 5: Solve for x
    x = 409,686,819,281.51/740,463.12
  6. Step 6: Final answer
    x = 553,284.57

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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.