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Finding the Fourth Proportional to 568,070.40, 783,900.72 and 313,421.52

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Solution

The fourth proportional to 568,070.40, 783,900.72 and 313,421.52 is: 432,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,070.40 : 783,900.72 = 313,421.52 : x
  2. Step 2: Convert to fraction form
    568,070.40/783,900.72 = 313,421.52/x
  3. Step 3: Cross multiply
    568,070.40x = 783,900.72 × 313,421.52
  4. Step 4: Simplify right side
    568,070.40x = 245,691,355,191.49
  5. Step 5: Solve for x
    x = 245,691,355,191.49/568,070.40
  6. Step 6: Final answer
    x = 432,501.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.