Home / 858,730.60-1,288,095.90-660,053.80

Finding the Fourth Proportional to 858,730.60, 1,288,095.90 and 660,053.80

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Solution

The fourth proportional to 858,730.60, 1,288,095.90 and 660,053.80 is: 990,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,730.60 : 1,288,095.90 = 660,053.80 : x
  2. Step 2: Convert to fraction form
    858,730.60/1,288,095.90 = 660,053.80/x
  3. Step 3: Cross multiply
    858,730.60x = 1,288,095.90 × 660,053.80
  4. Step 4: Simplify right side
    858,730.60x = 850,212,593,559.42
  5. Step 5: Solve for x
    x = 850,212,593,559.42/858,730.60
  6. Step 6: Final answer
    x = 990,080.70

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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.