Home / 977,129.40-1,465,694.10-641,206.20

Finding the Fourth Proportional to 977,129.40, 1,465,694.10 and 641,206.20

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Solution

The fourth proportional to 977,129.40, 1,465,694.10 and 641,206.20 is: 961,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,129.40 : 1,465,694.10 = 641,206.20 : x
  2. Step 2: Convert to fraction form
    977,129.40/1,465,694.10 = 641,206.20/x
  3. Step 3: Cross multiply
    977,129.40x = 1,465,694.10 × 641,206.20
  4. Step 4: Simplify right side
    977,129.40x = 939,812,144,223.42
  5. Step 5: Solve for x
    x = 939,812,144,223.42/977,129.40
  6. Step 6: Final answer
    x = 961,809.30

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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.