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Finding the Fourth Proportional to 660,448.98, 911,423.16 and 374,024.88

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Solution

The fourth proportional to 660,448.98, 911,423.16 and 374,024.88 is: 516,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,448.98 : 911,423.16 = 374,024.88 : x
  2. Step 2: Convert to fraction form
    660,448.98/911,423.16 = 374,024.88/x
  3. Step 3: Cross multiply
    660,448.98x = 911,423.16 × 374,024.88
  4. Step 4: Simplify right side
    660,448.98x = 340,894,938,048.22
  5. Step 5: Solve for x
    x = 340,894,938,048.22/660,448.98
  6. Step 6: Final answer
    x = 516,156.35

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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.