Home / 669,918.40-1,003,711.20-433,139.20

Finding the Fourth Proportional to 669,918.40, 1,003,711.20 and 433,139.20

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Solution

The fourth proportional to 669,918.40, 1,003,711.20 and 433,139.20 is: 648,954.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,918.40 : 1,003,711.20 = 433,139.20 : x
  2. Step 2: Convert to fraction form
    669,918.40/1,003,711.20 = 433,139.20/x
  3. Step 3: Cross multiply
    669,918.40x = 1,003,711.20 × 433,139.20
  4. Step 4: Simplify right side
    669,918.40x = 434,746,666,199.04
  5. Step 5: Solve for x
    x = 434,746,666,199.04/669,918.40
  6. Step 6: Final answer
    x = 648,954.66

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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.