Home / 688,905.60-1,033,387.20-368,923.20

Finding the Fourth Proportional to 688,905.60, 1,033,387.20 and 368,923.20

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Solution

The fourth proportional to 688,905.60, 1,033,387.20 and 368,923.20 is: 553,400.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,905.60 : 1,033,387.20 = 368,923.20 : x
  2. Step 2: Convert to fraction form
    688,905.60/1,033,387.20 = 368,923.20/x
  3. Step 3: Cross multiply
    688,905.60x = 1,033,387.20 × 368,923.20
  4. Step 4: Simplify right side
    688,905.60x = 381,240,512,663.04
  5. Step 5: Solve for x
    x = 381,240,512,663.04/688,905.60
  6. Step 6: Final answer
    x = 553,400.22

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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.