Home / 858,143.80-1,289,289.30-766,905.40

Finding the Fourth Proportional to 858,143.80, 1,289,289.30 and 766,905.40

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Solution

The fourth proportional to 858,143.80, 1,289,289.30 and 766,905.40 is: 1,152,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,143.80 : 1,289,289.30 = 766,905.40 : x
  2. Step 2: Convert to fraction form
    858,143.80/1,289,289.30 = 766,905.40/x
  3. Step 3: Cross multiply
    858,143.80x = 1,289,289.30 × 766,905.40
  4. Step 4: Simplify right side
    858,143.80x = 988,762,926,332.22
  5. Step 5: Solve for x
    x = 988,762,926,332.22/858,143.80
  6. Step 6: Final answer
    x = 1,152,211.23

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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.