Home / 1,021,430.79-1,532,703.47-422,443.89

Finding the Fourth Proportional to 1,021,430.79, 1,532,703.47 and 422,443.89

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Solution

The fourth proportional to 1,021,430.79, 1,532,703.47 and 422,443.89 is: 633,896.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,430.79 : 1,532,703.47 = 422,443.89 : x
  2. Step 2: Convert to fraction form
    1,021,430.79/1,532,703.47 = 422,443.89/x
  3. Step 3: Cross multiply
    1,021,430.79x = 1,532,703.47 × 422,443.89
  4. Step 4: Simplify right side
    1,021,430.79x = 647,481,213,971.08
  5. Step 5: Solve for x
    x = 647,481,213,971.08/1,021,430.79
  6. Step 6: Final answer
    x = 633,896.32

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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.