Home / 648,002.80-972,004.20-435,426.40

Finding the Fourth Proportional to 648,002.80, 972,004.20 and 435,426.40

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Solution

The fourth proportional to 648,002.80, 972,004.20 and 435,426.40 is: 653,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.80 : 972,004.20 = 435,426.40 : x
  2. Step 2: Convert to fraction form
    648,002.80/972,004.20 = 435,426.40/x
  3. Step 3: Cross multiply
    648,002.80x = 972,004.20 × 435,426.40
  4. Step 4: Simplify right side
    648,002.80x = 423,236,289,590.88
  5. Step 5: Solve for x
    x = 423,236,289,590.88/648,002.80
  6. Step 6: Final answer
    x = 653,139.60

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Similar ratio
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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.