Home / 745,782.31-1,029,131.08-439,788.51

Finding the Fourth Proportional to 745,782.31, 1,029,131.08 and 439,788.51

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Solution

The fourth proportional to 745,782.31, 1,029,131.08 and 439,788.51 is: 606,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,782.31 : 1,029,131.08 = 439,788.51 : x
  2. Step 2: Convert to fraction form
    745,782.31/1,029,131.08 = 439,788.51/x
  3. Step 3: Cross multiply
    745,782.31x = 1,029,131.08 × 439,788.51
  4. Step 4: Simplify right side
    745,782.31x = 452,600,024,267.89
  5. Step 5: Solve for x
    x = 452,600,024,267.89/745,782.31
  6. Step 6: Final answer
    x = 606,879.54

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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.