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Finding the Fourth Proportional to 508,889.40, 763,334.10 and 446,681.40

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Solution

The fourth proportional to 508,889.40, 763,334.10 and 446,681.40 is: 670,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,889.40 : 763,334.10 = 446,681.40 : x
  2. Step 2: Convert to fraction form
    508,889.40/763,334.10 = 446,681.40/x
  3. Step 3: Cross multiply
    508,889.40x = 763,334.10 × 446,681.40
  4. Step 4: Simplify right side
    508,889.40x = 340,967,144,455.74
  5. Step 5: Solve for x
    x = 340,967,144,455.74/508,889.40
  6. Step 6: Final answer
    x = 670,022.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.