Home / 912,643.07-1,259,396.48-499,098.24

Finding the Fourth Proportional to 912,643.07, 1,259,396.48 and 499,098.24

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Solution

The fourth proportional to 912,643.07, 1,259,396.48 and 499,098.24 is: 688,727.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,643.07 : 1,259,396.48 = 499,098.24 : x
  2. Step 2: Convert to fraction form
    912,643.07/1,259,396.48 = 499,098.24/x
  3. Step 3: Cross multiply
    912,643.07x = 1,259,396.48 × 499,098.24
  4. Step 4: Simplify right side
    912,643.07x = 628,562,564,134.70
  5. Step 5: Solve for x
    x = 628,562,564,134.70/912,643.07
  6. Step 6: Final answer
    x = 688,727.71

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Double scale
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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.