Home / 875,243.60-1,312,087.80-519,880.40

Finding the Fourth Proportional to 875,243.60, 1,312,087.80 and 519,880.40

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Solution

The fourth proportional to 875,243.60, 1,312,087.80 and 519,880.40 is: 779,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,243.60 : 1,312,087.80 = 519,880.40 : x
  2. Step 2: Convert to fraction form
    875,243.60/1,312,087.80 = 519,880.40/x
  3. Step 3: Cross multiply
    875,243.60x = 1,312,087.80 × 519,880.40
  4. Step 4: Simplify right side
    875,243.60x = 682,128,730,299.12
  5. Step 5: Solve for x
    x = 682,128,730,299.12/875,243.60
  6. Step 6: Final answer
    x = 779,358.72

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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.