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Finding the Fourth Proportional to 648,920.40, 973,207.80 and 199,640.40

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Solution

The fourth proportional to 648,920.40, 973,207.80 and 199,640.40 is: 299,407.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,920.40 : 973,207.80 = 199,640.40 : x
  2. Step 2: Convert to fraction form
    648,920.40/973,207.80 = 199,640.40/x
  3. Step 3: Cross multiply
    648,920.40x = 973,207.80 × 199,640.40
  4. Step 4: Simplify right side
    648,920.40x = 194,291,594,475.12
  5. Step 5: Solve for x
    x = 194,291,594,475.12/648,920.40
  6. Step 6: Final answer
    x = 299,407.44

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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.