Home / 851,269.80-1,276,256.70-430,847.40

Finding the Fourth Proportional to 851,269.80, 1,276,256.70 and 430,847.40

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Solution

The fourth proportional to 851,269.80, 1,276,256.70 and 430,847.40 is: 645,943.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,269.80 : 1,276,256.70 = 430,847.40 : x
  2. Step 2: Convert to fraction form
    851,269.80/1,276,256.70 = 430,847.40/x
  3. Step 3: Cross multiply
    851,269.80x = 1,276,256.70 × 430,847.40
  4. Step 4: Simplify right side
    851,269.80x = 549,871,880,927.58
  5. Step 5: Solve for x
    x = 549,871,880,927.58/851,269.80
  6. Step 6: Final answer
    x = 645,943.13

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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.