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Finding the Fourth Proportional to 672,906.07, 928,503.84 and 400,967.20

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Solution

The fourth proportional to 672,906.07, 928,503.84 and 400,967.20 is: 553,271.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,906.07 : 928,503.84 = 400,967.20 : x
  2. Step 2: Convert to fraction form
    672,906.07/928,503.84 = 400,967.20/x
  3. Step 3: Cross multiply
    672,906.07x = 928,503.84 × 400,967.20
  4. Step 4: Simplify right side
    672,906.07x = 372,299,584,914.05
  5. Step 5: Solve for x
    x = 372,299,584,914.05/672,906.07
  6. Step 6: Final answer
    x = 553,271.25

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1.5x scale

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.