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Finding the Fourth Proportional to 660,888.24, 912,008.56 and 374,400.96

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Solution

The fourth proportional to 660,888.24, 912,008.56 and 374,400.96 is: 516,663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,888.24 : 912,008.56 = 374,400.96 : x
  2. Step 2: Convert to fraction form
    660,888.24/912,008.56 = 374,400.96/x
  3. Step 3: Cross multiply
    660,888.24x = 912,008.56 × 374,400.96
  4. Step 4: Simplify right side
    660,888.24x = 341,456,880,392.22
  5. Step 5: Solve for x
    x = 341,456,880,392.22/660,888.24
  6. Step 6: Final answer
    x = 516,663.57

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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.