Home / 913,319.28-1,260,349.65-505,438.38

Finding the Fourth Proportional to 913,319.28, 1,260,349.65 and 505,438.38

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Solution

The fourth proportional to 913,319.28, 1,260,349.65 and 505,438.38 is: 697,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,319.28 : 1,260,349.65 = 505,438.38 : x
  2. Step 2: Convert to fraction form
    913,319.28/1,260,349.65 = 505,438.38/x
  3. Step 3: Cross multiply
    913,319.28x = 1,260,349.65 × 505,438.38
  4. Step 4: Simplify right side
    913,319.28x = 637,029,085,329.57
  5. Step 5: Solve for x
    x = 637,029,085,329.57/913,319.28
  6. Step 6: Final answer
    x = 697,487.83

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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.