Home / 1,440,930,945.28-1,988,486,405.40-780,881,223.28

Finding the Fourth Proportional to 1,440,930,945.28, 1,988,486,405.40 and 780,881,223.28

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Solution

The fourth proportional to 1,440,930,945.28, 1,988,486,405.40 and 780,881,223.28 is: 1,077,617,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,930,945.28 : 1,988,486,405.40 = 780,881,223.28 : x
  2. Step 2: Convert to fraction form
    1,440,930,945.28/1,988,486,405.40 = 780,881,223.28/x
  3. Step 3: Cross multiply
    1,440,930,945.28x = 1,988,486,405.40 × 780,881,223.28
  4. Step 4: Simplify right side
    1,440,930,945.28x = 1,552,771,696,724,401,920
  5. Step 5: Solve for x
    x = 1,552,771,696,724,401,920/1,440,930,945.28
  6. Step 6: Final answer
    x = 1,077,617,009.90

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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.