Home / 572,785.20-860,095.80-455,432.40

Finding the Fourth Proportional to 572,785.20, 860,095.80 and 455,432.40

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Solution

The fourth proportional to 572,785.20, 860,095.80 and 455,432.40 is: 683,878.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,785.20 : 860,095.80 = 455,432.40 : x
  2. Step 2: Convert to fraction form
    572,785.20/860,095.80 = 455,432.40/x
  3. Step 3: Cross multiply
    572,785.20x = 860,095.80 × 455,432.40
  4. Step 4: Simplify right side
    572,785.20x = 391,715,494,423.92
  5. Step 5: Solve for x
    x = 391,715,494,423.92/572,785.20
  6. Step 6: Final answer
    x = 683,878.52

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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.