Home / 689,041.56-1,033,700.30-385,866.86

Finding the Fourth Proportional to 689,041.56, 1,033,700.30 and 385,866.86

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Solution

The fourth proportional to 689,041.56, 1,033,700.30 and 385,866.86 is: 578,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,041.56 : 1,033,700.30 = 385,866.86 : x
  2. Step 2: Convert to fraction form
    689,041.56/1,033,700.30 = 385,866.86/x
  3. Step 3: Cross multiply
    689,041.56x = 1,033,700.30 × 385,866.86
  4. Step 4: Simplify right side
    689,041.56x = 398,870,688,942.06
  5. Step 5: Solve for x
    x = 398,870,688,942.06/689,041.56
  6. Step 6: Final answer
    x = 578,877.55

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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.