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Finding the Fourth Proportional to 660,403.24, 912,106.02 and 445,172.20

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Solution

The fourth proportional to 660,403.24, 912,106.02 and 445,172.20 is: 614,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,403.24 : 912,106.02 = 445,172.20 : x
  2. Step 2: Convert to fraction form
    660,403.24/912,106.02 = 445,172.20/x
  3. Step 3: Cross multiply
    660,403.24x = 912,106.02 × 445,172.20
  4. Step 4: Simplify right side
    660,403.24x = 406,044,243,556.64
  5. Step 5: Solve for x
    x = 406,044,243,556.64/660,403.24
  6. Step 6: Final answer
    x = 614,842.90

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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.