Home / 687,416.80-1,032,048.60-403,398.40

Finding the Fourth Proportional to 687,416.80, 1,032,048.60 and 403,398.40

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Solution

The fourth proportional to 687,416.80, 1,032,048.60 and 403,398.40 is: 605,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,416.80 : 1,032,048.60 = 403,398.40 : x
  2. Step 2: Convert to fraction form
    687,416.80/1,032,048.60 = 403,398.40/x
  3. Step 3: Cross multiply
    687,416.80x = 1,032,048.60 × 403,398.40
  4. Step 4: Simplify right side
    687,416.80x = 416,326,753,962.24
  5. Step 5: Solve for x
    x = 416,326,753,962.24/687,416.80
  6. Step 6: Final answer
    x = 605,639.48

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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.