Home / 864,029.60-1,296,737.44-390,756.32

Finding the Fourth Proportional to 864,029.60, 1,296,737.44 and 390,756.32

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Solution

The fourth proportional to 864,029.60, 1,296,737.44 and 390,756.32 is: 586,447.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,029.60 : 1,296,737.44 = 390,756.32 : x
  2. Step 2: Convert to fraction form
    864,029.60/1,296,737.44 = 390,756.32/x
  3. Step 3: Cross multiply
    864,029.60x = 1,296,737.44 × 390,756.32
  4. Step 4: Simplify right side
    864,029.60x = 506,708,350,060.62
  5. Step 5: Solve for x
    x = 506,708,350,060.62/864,029.60
  6. Step 6: Final answer
    x = 586,447.91

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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.