Home / 987,023.80-1,477,911.30-630,105.40

Finding the Fourth Proportional to 987,023.80, 1,477,911.30 and 630,105.40

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Solution

The fourth proportional to 987,023.80, 1,477,911.30 and 630,105.40 is: 943,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,023.80 : 1,477,911.30 = 630,105.40 : x
  2. Step 2: Convert to fraction form
    987,023.80/1,477,911.30 = 630,105.40/x
  3. Step 3: Cross multiply
    987,023.80x = 1,477,911.30 × 630,105.40
  4. Step 4: Simplify right side
    987,023.80x = 931,239,890,851.02
  5. Step 5: Solve for x
    x = 931,239,890,851.02/987,023.80
  6. Step 6: Final answer
    x = 943,482.71

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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.