Home / 919,243.20-1,378,864.80-670,411.20

Finding the Fourth Proportional to 919,243.20, 1,378,864.80 and 670,411.20

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Solution

The fourth proportional to 919,243.20, 1,378,864.80 and 670,411.20 is: 1,005,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,243.20 : 1,378,864.80 = 670,411.20 : x
  2. Step 2: Convert to fraction form
    919,243.20/1,378,864.80 = 670,411.20/x
  3. Step 3: Cross multiply
    919,243.20x = 1,378,864.80 × 670,411.20
  4. Step 4: Simplify right side
    919,243.20x = 924,406,405,205.76
  5. Step 5: Solve for x
    x = 924,406,405,205.76/919,243.20
  6. Step 6: Final answer
    x = 1,005,616.80

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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.