Home / 648,931.20-973,396.80-424,982.40

Finding the Fourth Proportional to 648,931.20, 973,396.80 and 424,982.40

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Solution

The fourth proportional to 648,931.20, 973,396.80 and 424,982.40 is: 637,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,931.20 : 973,396.80 = 424,982.40 : x
  2. Step 2: Convert to fraction form
    648,931.20/973,396.80 = 424,982.40/x
  3. Step 3: Cross multiply
    648,931.20x = 973,396.80 × 424,982.40
  4. Step 4: Simplify right side
    648,931.20x = 413,676,508,216.32
  5. Step 5: Solve for x
    x = 413,676,508,216.32/648,931.20
  6. Step 6: Final answer
    x = 637,473.60

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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.