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Finding the Fourth Proportional to 1,072,402,418.40, 1,608,603,627.60 and 759,489,957.60

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Solution

The fourth proportional to 1,072,402,418.40, 1,608,603,627.60 and 759,489,957.60 is: 1,139,234,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,402,418.40 : 1,608,603,627.60 = 759,489,957.60 : x
  2. Step 2: Convert to fraction form
    1,072,402,418.40/1,608,603,627.60 = 759,489,957.60/x
  3. Step 3: Cross multiply
    1,072,402,418.40x = 1,608,603,627.60 × 759,489,957.60
  4. Step 4: Simplify right side
    1,072,402,418.40x = 1,221,718,300,921,130,240
  5. Step 5: Solve for x
    x = 1,221,718,300,921,130,240/1,072,402,418.40
  6. Step 6: Final answer
    x = 1,139,234,936.40

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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.