Home / 688,748.90-1,033,123.35-449,600.45

Finding the Fourth Proportional to 688,748.90, 1,033,123.35 and 449,600.45

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Solution

The fourth proportional to 688,748.90, 1,033,123.35 and 449,600.45 is: 674,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,748.90 : 1,033,123.35 = 449,600.45 : x
  2. Step 2: Convert to fraction form
    688,748.90/1,033,123.35 = 449,600.45/x
  3. Step 3: Cross multiply
    688,748.90x = 1,033,123.35 × 449,600.45
  4. Step 4: Simplify right side
    688,748.90x = 464,492,723,065.51
  5. Step 5: Solve for x
    x = 464,492,723,065.51/688,748.90
  6. Step 6: Final answer
    x = 674,400.68

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Double scale
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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.