Home / 642,666.85-964,000.28-540,023.65

Finding the Fourth Proportional to 642,666.85, 964,000.28 and 540,023.65

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Solution

The fourth proportional to 642,666.85, 964,000.28 and 540,023.65 is: 810,035.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,666.85 : 964,000.28 = 540,023.65 : x
  2. Step 2: Convert to fraction form
    642,666.85/964,000.28 = 540,023.65/x
  3. Step 3: Cross multiply
    642,666.85x = 964,000.28 × 540,023.65
  4. Step 4: Simplify right side
    642,666.85x = 520,582,947,106.50
  5. Step 5: Solve for x
    x = 520,582,947,106.50/642,666.85
  6. Step 6: Final answer
    x = 810,035.48

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1.5x scale

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.