Home / 764,613.95-1,055,234.47-420,510.50

Finding the Fourth Proportional to 764,613.95, 1,055,234.47 and 420,510.50

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Solution

The fourth proportional to 764,613.95, 1,055,234.47 and 420,510.50 is: 580,341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,613.95 : 1,055,234.47 = 420,510.50 : x
  2. Step 2: Convert to fraction form
    764,613.95/1,055,234.47 = 420,510.50/x
  3. Step 3: Cross multiply
    764,613.95x = 1,055,234.47 × 420,510.50
  4. Step 4: Simplify right side
    764,613.95x = 443,737,178,950.77
  5. Step 5: Solve for x
    x = 443,737,178,950.77/764,613.95
  6. Step 6: Final answer
    x = 580,341.47

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Double scale
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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.