Home / 670,421.40-1,005,680.70-403,607.40

Finding the Fourth Proportional to 670,421.40, 1,005,680.70 and 403,607.40

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Solution

The fourth proportional to 670,421.40, 1,005,680.70 and 403,607.40 is: 605,440.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,421.40 : 1,005,680.70 = 403,607.40 : x
  2. Step 2: Convert to fraction form
    670,421.40/1,005,680.70 = 403,607.40/x
  3. Step 3: Cross multiply
    670,421.40x = 1,005,680.70 × 403,607.40
  4. Step 4: Simplify right side
    670,421.40x = 405,900,172,557.18
  5. Step 5: Solve for x
    x = 405,900,172,557.18/670,421.40
  6. Step 6: Final answer
    x = 605,440.36

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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.