Home / 810,478.30-1,214,630.67-630,780.70

Finding the Fourth Proportional to 810,478.30, 1,214,630.67 and 630,780.70

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Solution

The fourth proportional to 810,478.30, 1,214,630.67 and 630,780.70 is: 945,325.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,478.30 : 1,214,630.67 = 630,780.70 : x
  2. Step 2: Convert to fraction form
    810,478.30/1,214,630.67 = 630,780.70/x
  3. Step 3: Cross multiply
    810,478.30x = 1,214,630.67 × 630,780.70
  4. Step 4: Simplify right side
    810,478.30x = 766,165,584,264.07
  5. Step 5: Solve for x
    x = 766,165,584,264.07/810,478.30
  6. Step 6: Final answer
    x = 945,325.23

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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.