Home / 1,287,934.20-1,931,901.30-910,020.60

Finding the Fourth Proportional to 1,287,934.20, 1,931,901.30 and 910,020.60

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Solution

The fourth proportional to 1,287,934.20, 1,931,901.30 and 910,020.60 is: 1,365,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,934.20 : 1,931,901.30 = 910,020.60 : x
  2. Step 2: Convert to fraction form
    1,287,934.20/1,931,901.30 = 910,020.60/x
  3. Step 3: Cross multiply
    1,287,934.20x = 1,931,901.30 × 910,020.60
  4. Step 4: Simplify right side
    1,287,934.20x = 1,758,069,980,166.78
  5. Step 5: Solve for x
    x = 1,758,069,980,166.78/1,287,934.20
  6. Step 6: Final answer
    x = 1,365,030.90

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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.