Home / 912,322,428.24-1,259,031,504.78-515,836,900.92

Finding the Fourth Proportional to 912,322,428.24, 1,259,031,504.78 and 515,836,900.92

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Solution

The fourth proportional to 912,322,428.24, 1,259,031,504.78 and 515,836,900.92 is: 711,869,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,322,428.24 : 1,259,031,504.78 = 515,836,900.92 : x
  2. Step 2: Convert to fraction form
    912,322,428.24/1,259,031,504.78 = 515,836,900.92/x
  3. Step 3: Cross multiply
    912,322,428.24x = 1,259,031,504.78 × 515,836,900.92
  4. Step 4: Simplify right side
    912,322,428.24x = 649,454,909,586,359,424
  5. Step 5: Solve for x
    x = 649,454,909,586,359,424/912,322,428.24
  6. Step 6: Final answer
    x = 711,869,937.08

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Double scale
Find fourth proportional to 912,322,429.24, 1,259,031,506.16 and 515,836,901.92
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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.