Home / 953,408.40-1,428,946.20-420,363.60

Finding the Fourth Proportional to 953,408.40, 1,428,946.20 and 420,363.60

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Solution

The fourth proportional to 953,408.40, 1,428,946.20 and 420,363.60 is: 630,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    953,408.40 : 1,428,946.20 = 420,363.60 : x
  2. Step 2: Convert to fraction form
    953,408.40/1,428,946.20 = 420,363.60/x
  3. Step 3: Cross multiply
    953,408.40x = 1,428,946.20 × 420,363.60
  4. Step 4: Simplify right side
    953,408.40x = 600,676,968,838.32
  5. Step 5: Solve for x
    x = 600,676,968,838.32/953,408.40
  6. Step 6: Final answer
    x = 630,031.13

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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.