Home / 867,085.80-1,300,628.70-831,656.40

Finding the Fourth Proportional to 867,085.80, 1,300,628.70 and 831,656.40

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Solution

The fourth proportional to 867,085.80, 1,300,628.70 and 831,656.40 is: 1,247,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,085.80 : 1,300,628.70 = 831,656.40 : x
  2. Step 2: Convert to fraction form
    867,085.80/1,300,628.70 = 831,656.40/x
  3. Step 3: Cross multiply
    867,085.80x = 1,300,628.70 × 831,656.40
  4. Step 4: Simplify right side
    867,085.80x = 1,081,676,182,378.68
  5. Step 5: Solve for x
    x = 1,081,676,182,378.68/867,085.80
  6. Step 6: Final answer
    x = 1,247,484.60

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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.