Home / 670,619,559.20-1,005,929,338.80-638,874,816.80

Finding the Fourth Proportional to 670,619,559.20, 1,005,929,338.80 and 638,874,816.80

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Solution

The fourth proportional to 670,619,559.20, 1,005,929,338.80 and 638,874,816.80 is: 958,312,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,619,559.20 : 1,005,929,338.80 = 638,874,816.80 : x
  2. Step 2: Convert to fraction form
    670,619,559.20/1,005,929,338.80 = 638,874,816.80/x
  3. Step 3: Cross multiply
    670,619,559.20x = 1,005,929,338.80 × 638,874,816.80
  4. Step 4: Simplify right side
    670,619,559.20x = 642,662,922,039,595,008
  5. Step 5: Solve for x
    x = 642,662,922,039,595,008/670,619,559.20
  6. Step 6: Final answer
    x = 958,312,225.20

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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.