Home / 939,035.64-1,408,043.72-426,419.32

Finding the Fourth Proportional to 939,035.64, 1,408,043.72 and 426,419.32

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Solution

The fourth proportional to 939,035.64, 1,408,043.72 and 426,419.32 is: 639,397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,035.64 : 1,408,043.72 = 426,419.32 : x
  2. Step 2: Convert to fraction form
    939,035.64/1,408,043.72 = 426,419.32/x
  3. Step 3: Cross multiply
    939,035.64x = 1,408,043.72 × 426,419.32
  4. Step 4: Simplify right side
    939,035.64x = 600,417,045,612.67
  5. Step 5: Solve for x
    x = 600,417,045,612.67/939,035.64
  6. Step 6: Final answer
    x = 639,397.51

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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.