Home / 499,461.12-688,667.40-403,671.60

Finding the Fourth Proportional to 499,461.12, 688,667.40 and 403,671.60

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Solution

The fourth proportional to 499,461.12, 688,667.40 and 403,671.60 is: 556,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,461.12 : 688,667.40 = 403,671.60 : x
  2. Step 2: Convert to fraction form
    499,461.12/688,667.40 = 403,671.60/x
  3. Step 3: Cross multiply
    499,461.12x = 688,667.40 × 403,671.60
  4. Step 4: Simplify right side
    499,461.12x = 277,995,471,225.84
  5. Step 5: Solve for x
    x = 277,995,471,225.84/499,461.12
  6. Step 6: Final answer
    x = 556,590.81

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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.