Home / 745,748.64-1,029,132.72-406,216.80

Finding the Fourth Proportional to 745,748.64, 1,029,132.72 and 406,216.80

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Solution

The fourth proportional to 745,748.64, 1,029,132.72 and 406,216.80 is: 560,578.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,748.64 : 1,029,132.72 = 406,216.80 : x
  2. Step 2: Convert to fraction form
    745,748.64/1,029,132.72 = 406,216.80/x
  3. Step 3: Cross multiply
    745,748.64x = 1,029,132.72 × 406,216.80
  4. Step 4: Simplify right side
    745,748.64x = 418,051,000,293.70
  5. Step 5: Solve for x
    x = 418,051,000,293.70/745,748.64
  6. Step 6: Final answer
    x = 560,578.96

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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.