Home / 747,746.20-1,121,619.30-666,875.80

Finding the Fourth Proportional to 747,746.20, 1,121,619.30 and 666,875.80

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Solution

The fourth proportional to 747,746.20, 1,121,619.30 and 666,875.80 is: 1,000,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,746.20 : 1,121,619.30 = 666,875.80 : x
  2. Step 2: Convert to fraction form
    747,746.20/1,121,619.30 = 666,875.80/x
  3. Step 3: Cross multiply
    747,746.20x = 1,121,619.30 × 666,875.80
  4. Step 4: Simplify right side
    747,746.20x = 747,980,767,982.94
  5. Step 5: Solve for x
    x = 747,980,767,982.94/747,746.20
  6. Step 6: Final answer
    x = 1,000,313.70

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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.