Home / 738,378.40-1,107,567.60-402,455.20

Finding the Fourth Proportional to 738,378.40, 1,107,567.60 and 402,455.20

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Solution

The fourth proportional to 738,378.40, 1,107,567.60 and 402,455.20 is: 603,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,378.40 : 1,107,567.60 = 402,455.20 : x
  2. Step 2: Convert to fraction form
    738,378.40/1,107,567.60 = 402,455.20/x
  3. Step 3: Cross multiply
    738,378.40x = 1,107,567.60 × 402,455.20
  4. Step 4: Simplify right side
    738,378.40x = 445,746,339,971.52
  5. Step 5: Solve for x
    x = 445,746,339,971.52/738,378.40
  6. Step 6: Final answer
    x = 603,682.80

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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.