Home / 858,312.86-1,287,469.30-457,740.06

Finding the Fourth Proportional to 858,312.86, 1,287,469.30 and 457,740.06

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Solution

The fourth proportional to 858,312.86, 1,287,469.30 and 457,740.06 is: 686,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,312.86 : 1,287,469.30 = 457,740.06 : x
  2. Step 2: Convert to fraction form
    858,312.86/1,287,469.30 = 457,740.06/x
  3. Step 3: Cross multiply
    858,312.86x = 1,287,469.30 × 457,740.06
  4. Step 4: Simplify right side
    858,312.86x = 589,326,274,630.16
  5. Step 5: Solve for x
    x = 589,326,274,630.16/858,312.86
  6. Step 6: Final answer
    x = 686,610.10

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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.