Home / 912,805.61-1,369,299.65-313,687.89

Finding the Fourth Proportional to 912,805.61, 1,369,299.65 and 313,687.89

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Solution

The fourth proportional to 912,805.61, 1,369,299.65 and 313,687.89 is: 470,563.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,805.61 : 1,369,299.65 = 313,687.89 : x
  2. Step 2: Convert to fraction form
    912,805.61/1,369,299.65 = 313,687.89/x
  3. Step 3: Cross multiply
    912,805.61x = 1,369,299.65 × 313,687.89
  4. Step 4: Simplify right side
    912,805.61x = 429,532,716,417.80
  5. Step 5: Solve for x
    x = 429,532,716,417.80/912,805.61
  6. Step 6: Final answer
    x = 470,563.19

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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.