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Finding the Fourth Proportional to 453,899.80, 680,849.70 and 313,931.80

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Solution

The fourth proportional to 453,899.80, 680,849.70 and 313,931.80 is: 470,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,899.80 : 680,849.70 = 313,931.80 : x
  2. Step 2: Convert to fraction form
    453,899.80/680,849.70 = 313,931.80/x
  3. Step 3: Cross multiply
    453,899.80x = 680,849.70 × 313,931.80
  4. Step 4: Simplify right side
    453,899.80x = 213,740,371,850.46
  5. Step 5: Solve for x
    x = 213,740,371,850.46/453,899.80
  6. Step 6: Final answer
    x = 470,897.70

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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.