Home / 977,911.80-1,464,899.40-678,730.20

Finding the Fourth Proportional to 977,911.80, 1,464,899.40 and 678,730.20

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Solution

The fourth proportional to 977,911.80, 1,464,899.40 and 678,730.20 is: 1,016,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,911.80 : 1,464,899.40 = 678,730.20 : x
  2. Step 2: Convert to fraction form
    977,911.80/1,464,899.40 = 678,730.20/x
  3. Step 3: Cross multiply
    977,911.80x = 1,464,899.40 × 678,730.20
  4. Step 4: Simplify right side
    977,911.80x = 994,271,462,741.88
  5. Step 5: Solve for x
    x = 994,271,462,741.88/977,911.80
  6. Step 6: Final answer
    x = 1,016,729.18

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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.