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Finding the Fourth Proportional to 978,036,155.30, 1,467,054,232.95 and 881,290,273.70

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Solution

The fourth proportional to 978,036,155.30, 1,467,054,232.95 and 881,290,273.70 is: 1,321,935,410.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,036,155.30 : 1,467,054,232.95 = 881,290,273.70 : x
  2. Step 2: Convert to fraction form
    978,036,155.30/1,467,054,232.95 = 881,290,273.70/x
  3. Step 3: Cross multiply
    978,036,155.30x = 1,467,054,232.95 × 881,290,273.70
  4. Step 4: Simplify right side
    978,036,155.30x = 1,292,900,626,489,249,280
  5. Step 5: Solve for x
    x = 1,292,900,626,489,249,280/978,036,155.30
  6. Step 6: Final answer
    x = 1,321,935,410.55

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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.