Home / 648,691.20-973,036.80-424,742.40

Finding the Fourth Proportional to 648,691.20, 973,036.80 and 424,742.40

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Solution

The fourth proportional to 648,691.20, 973,036.80 and 424,742.40 is: 637,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,691.20 : 973,036.80 = 424,742.40 : x
  2. Step 2: Convert to fraction form
    648,691.20/973,036.80 = 424,742.40/x
  3. Step 3: Cross multiply
    648,691.20x = 973,036.80 × 424,742.40
  4. Step 4: Simplify right side
    648,691.20x = 413,289,985,720.32
  5. Step 5: Solve for x
    x = 413,289,985,720.32/648,691.20
  6. Step 6: Final answer
    x = 637,113.60

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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.