Home / 859,088.70-1,288,633.05-498,889.80

Finding the Fourth Proportional to 859,088.70, 1,288,633.05 and 498,889.80

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Solution

The fourth proportional to 859,088.70, 1,288,633.05 and 498,889.80 is: 748,334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,088.70 : 1,288,633.05 = 498,889.80 : x
  2. Step 2: Convert to fraction form
    859,088.70/1,288,633.05 = 498,889.80/x
  3. Step 3: Cross multiply
    859,088.70x = 1,288,633.05 × 498,889.80
  4. Step 4: Simplify right side
    859,088.70x = 642,885,884,587.89
  5. Step 5: Solve for x
    x = 642,885,884,587.89/859,088.70
  6. Step 6: Final answer
    x = 748,334.70

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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.