Home / 915,916.80-1,373,875.20-853,708.80

Finding the Fourth Proportional to 915,916.80, 1,373,875.20 and 853,708.80

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Solution

The fourth proportional to 915,916.80, 1,373,875.20 and 853,708.80 is: 1,280,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,916.80 : 1,373,875.20 = 853,708.80 : x
  2. Step 2: Convert to fraction form
    915,916.80/1,373,875.20 = 853,708.80/x
  3. Step 3: Cross multiply
    915,916.80x = 1,373,875.20 × 853,708.80
  4. Step 4: Simplify right side
    915,916.80x = 1,172,889,348,341.76
  5. Step 5: Solve for x
    x = 1,172,889,348,341.76/915,916.80
  6. Step 6: Final answer
    x = 1,280,563.20

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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.