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Finding the Fourth Proportional to 644,707.95, 889,701.24 and 403,131.93

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Solution

The fourth proportional to 644,707.95, 889,701.24 and 403,131.93 is: 556,324.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,707.95 : 889,701.24 = 403,131.93 : x
  2. Step 2: Convert to fraction form
    644,707.95/889,701.24 = 403,131.93/x
  3. Step 3: Cross multiply
    644,707.95x = 889,701.24 × 403,131.93
  4. Step 4: Simplify right side
    644,707.95x = 358,666,981,340.97
  5. Step 5: Solve for x
    x = 358,666,981,340.97/644,707.95
  6. Step 6: Final answer
    x = 556,324.73

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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.