Home / 851,263.80-1,276,247.70-430,841.40

Finding the Fourth Proportional to 851,263.80, 1,276,247.70 and 430,841.40

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Solution

The fourth proportional to 851,263.80, 1,276,247.70 and 430,841.40 is: 645,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,263.80 : 1,276,247.70 = 430,841.40 : x
  2. Step 2: Convert to fraction form
    851,263.80/1,276,247.70 = 430,841.40/x
  3. Step 3: Cross multiply
    851,263.80x = 1,276,247.70 × 430,841.40
  4. Step 4: Simplify right side
    851,263.80x = 549,860,345,814.78
  5. Step 5: Solve for x
    x = 549,860,345,814.78/851,263.80
  6. Step 6: Final answer
    x = 645,934.13

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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.