Home / 687,496.48-1,031,228.88-404,979.22

Finding the Fourth Proportional to 687,496.48, 1,031,228.88 and 404,979.22

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Solution

The fourth proportional to 687,496.48, 1,031,228.88 and 404,979.22 is: 607,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,496.48 : 1,031,228.88 = 404,979.22 : x
  2. Step 2: Convert to fraction form
    687,496.48/1,031,228.88 = 404,979.22/x
  3. Step 3: Cross multiply
    687,496.48x = 1,031,228.88 × 404,979.22
  4. Step 4: Simplify right side
    687,496.48x = 417,626,267,463.87
  5. Step 5: Solve for x
    x = 417,626,267,463.87/687,496.48
  6. Step 6: Final answer
    x = 607,459.50

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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.