Home / 1,208,524,972.80-1,812,787,459.20-391,223,827.20

Finding the Fourth Proportional to 1,208,524,972.80, 1,812,787,459.20 and 391,223,827.20

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Solution

The fourth proportional to 1,208,524,972.80, 1,812,787,459.20 and 391,223,827.20 is: 586,835,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,524,972.80 : 1,812,787,459.20 = 391,223,827.20 : x
  2. Step 2: Convert to fraction form
    1,208,524,972.80/1,812,787,459.20 = 391,223,827.20/x
  3. Step 3: Cross multiply
    1,208,524,972.80x = 1,812,787,459.20 × 391,223,827.20
  4. Step 4: Simplify right side
    1,208,524,972.80x = 709,205,647,688,387,840
  5. Step 5: Solve for x
    x = 709,205,647,688,387,840/1,208,524,972.80
  6. Step 6: Final answer
    x = 586,835,740.80

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Double scale
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1.5x scale

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.