Home / 876,788.10-1,209,875.22-509,193.50

Finding the Fourth Proportional to 876,788.10, 1,209,875.22 and 509,193.50

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Solution

The fourth proportional to 876,788.10, 1,209,875.22 and 509,193.50 is: 702,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,788.10 : 1,209,875.22 = 509,193.50 : x
  2. Step 2: Convert to fraction form
    876,788.10/1,209,875.22 = 509,193.50/x
  3. Step 3: Cross multiply
    876,788.10x = 1,209,875.22 × 509,193.50
  4. Step 4: Simplify right side
    876,788.10x = 616,060,597,835.07
  5. Step 5: Solve for x
    x = 616,060,597,835.07/876,788.10
  6. Step 6: Final answer
    x = 702,633.39

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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.