Home / 487,623.40-731,435.10-404,679.40

Finding the Fourth Proportional to 487,623.40, 731,435.10 and 404,679.40

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Solution

The fourth proportional to 487,623.40, 731,435.10 and 404,679.40 is: 607,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,623.40 : 731,435.10 = 404,679.40 : x
  2. Step 2: Convert to fraction form
    487,623.40/731,435.10 = 404,679.40/x
  3. Step 3: Cross multiply
    487,623.40x = 731,435.10 × 404,679.40
  4. Step 4: Simplify right side
    487,623.40x = 295,996,717,406.94
  5. Step 5: Solve for x
    x = 295,996,717,406.94/487,623.40
  6. Step 6: Final answer
    x = 607,019.10

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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.