Home / 738,909.41-1,108,801.85-312,421.91

Finding the Fourth Proportional to 738,909.41, 1,108,801.85 and 312,421.91

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Solution

The fourth proportional to 738,909.41, 1,108,801.85 and 312,421.91 is: 468,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,909.41 : 1,108,801.85 = 312,421.91 : x
  2. Step 2: Convert to fraction form
    738,909.41/1,108,801.85 = 312,421.91/x
  3. Step 3: Cross multiply
    738,909.41x = 1,108,801.85 × 312,421.91
  4. Step 4: Simplify right side
    738,909.41x = 346,413,984,682.42
  5. Step 5: Solve for x
    x = 346,413,984,682.42/738,909.41
  6. Step 6: Final answer
    x = 468,817.94

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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.