Home / 832,772,036.40-1,247,646,400.20-678,583,287.60

Finding the Fourth Proportional to 832,772,036.40, 1,247,646,400.20 and 678,583,287.60

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Solution

The fourth proportional to 832,772,036.40, 1,247,646,400.20 and 678,583,287.60 is: 1,016,643,161.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    832,772,036.40 : 1,247,646,400.20 = 678,583,287.60 : x
  2. Step 2: Convert to fraction form
    832,772,036.40/1,247,646,400.20 = 678,583,287.60/x
  3. Step 3: Cross multiply
    832,772,036.40x = 1,247,646,400.20 × 678,583,287.60
  4. Step 4: Simplify right side
    832,772,036.40x = 846,631,996,010,021,376
  5. Step 5: Solve for x
    x = 846,631,996,010,021,376/832,772,036.40
  6. Step 6: Final answer
    x = 1,016,643,161.64

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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.