Home / 1,289,340.30-1,934,010.45-342,806.70

Finding the Fourth Proportional to 1,289,340.30, 1,934,010.45 and 342,806.70

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Solution

The fourth proportional to 1,289,340.30, 1,934,010.45 and 342,806.70 is: 514,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,340.30 : 1,934,010.45 = 342,806.70 : x
  2. Step 2: Convert to fraction form
    1,289,340.30/1,934,010.45 = 342,806.70/x
  3. Step 3: Cross multiply
    1,289,340.30x = 1,934,010.45 × 342,806.70
  4. Step 4: Simplify right side
    1,289,340.30x = 662,991,740,130.02
  5. Step 5: Solve for x
    x = 662,991,740,130.02/1,289,340.30
  6. Step 6: Final answer
    x = 514,210.05

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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.