Home / 738,139.86-1,107,559.71-439,210.98

Finding the Fourth Proportional to 738,139.86, 1,107,559.71 and 439,210.98

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Solution

The fourth proportional to 738,139.86, 1,107,559.71 and 439,210.98 is: 659,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,139.86 : 1,107,559.71 = 439,210.98 : x
  2. Step 2: Convert to fraction form
    738,139.86/1,107,559.71 = 439,210.98/x
  3. Step 3: Cross multiply
    738,139.86x = 1,107,559.71 × 439,210.98
  4. Step 4: Simplify right side
    738,139.86x = 486,452,385,637.62
  5. Step 5: Solve for x
    x = 486,452,385,637.62/738,139.86
  6. Step 6: Final answer
    x = 659,024.68

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Double scale
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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.