Home / 878,030.72-1,211,684.64-475,622.72

Finding the Fourth Proportional to 878,030.72, 1,211,684.64 and 475,622.72

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Solution

The fourth proportional to 878,030.72, 1,211,684.64 and 475,622.72 is: 656,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,030.72 : 1,211,684.64 = 475,622.72 : x
  2. Step 2: Convert to fraction form
    878,030.72/1,211,684.64 = 475,622.72/x
  3. Step 3: Cross multiply
    878,030.72x = 1,211,684.64 × 475,622.72
  4. Step 4: Simplify right side
    878,030.72x = 576,304,744,259.02
  5. Step 5: Solve for x
    x = 576,304,744,259.02/878,030.72
  6. Step 6: Final answer
    x = 656,360.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.